I can not get out of the museum because I can not figure out how to make the long jump across a pit to get the fire escape key. I have run and jumped 100 times and can not get the character Lara to grab the side I am jumping to. Do I have to be patient and keep trying or is there a trick to this? Any help will be greatly appreciated.

Go back the opposite direction and look up. There should be monkey bars to climb over the fire. If this does not work there should be a switch towards the beginning. Watch your step that fire does get hot and hurry up!