Dance proposal satisfactory in part (5)
I believe the answer is:
salsa
'dance' is the definition.
(I've seen this before)
'proposal satisfactory in part' is the wordplay.
'in part' indicates a hidden word.
'SALSA' can be found hidden inside 'proposal satisfactory'.
(Other definitions for salsa that I've seen before include "dancing?" , "Steps" , "dressing" , "Latin American dance - spicy Mexican sauce" , "Dance or a dip?" .)