Hi, I was flying between Nassau and San Juan today at 11,000 feet and I had all 4 engines shut down. I looked up at the overhead and I realized that all the main tanks ran dry. I'm aware the fuel system needs to be managed correctly using the tank selector and cross-feed valves, but I thought this was done by the flight engineer ? Thanks. 

I think there is a list of things the AFE doesn't do in the introduction.  Regardless, it must be embarrassing to admit you were the pilot when this happened.  The fuel system is complex, take time to learn it.