Hey Michael, Welcome to Steemit!

+27.724 represents the amount of Steem power delegated to your account (by the system I guess)
It is not in your posession but will increase your voting impact as long it is delegated to you, since at the beginning you only have the tiny amount of 0.500 Steem at your free disposal. I believe it is intended to help newcomers get along.

P.S.: I am currently learning Russian at my University :D