The fourth dimension is not a spacial one but it consists instead of time. Time helps plot an object’s location in the universe and also adds a way for the third dimension to change.
In the fifth dimension there would be a new world that would allow us to see the similarities and differences between our world and this new one, existing in the same position and having the same beginning as our planet, i.e. the Big Bang.
The sixth dimension is an entire plane of new worlds that would allow you to see all possible futures, presents, and pasts with, again, the same beginning as our universe.
In the seventh dimension up through the ninth, we now have the possibility of new universes with new physical forces of nature and different laws of gravity and light. The seventh dimension is the beginning of this, where we encounter new universes which have a different beginning from ours. That is, they were not born from the Big Bang.
The eight dimension is a plane of all the possible pasts and futures for each universe, stretching infinitely.
The ninth dimension lays bare all the universal laws of physics and the conditions of each individual universe.
Some scientists believe that the multiverse has only 10 dimensions while others put that number at 11. However, a universe cannot have more than 11 dimensions because of self consistency — they become unstable and collapse back down into 11 or 10 dimensions. At this point, anything is possible. There are all futures, all pasts, all beginnings and all ends, infinitely extended, a dimension of anything you can imagine. Everything comes together.