Sorry if this is in the DT -- I can't find it tho. I'm trying to figure out the chord that fits over line "it goes like this, the fourth the fifth" Anyone?

I'm playing:

C Am
They say that there's a secret chord
C Am
David found and it pleased the Lord
F C
But you don't really care for music do you?

C Am
It goes like this: the fourth the fifth
F Am
The minor fall the major lift
F
The battle king composing: hellelujah!

etc. Thanks