The next number in the series 4, 12, 6, 12, 36, 18, 36
The next number could be 26 The next number could be 12 - - - - - - - - - The next number that is in the sequence is 12.
The next number in the series 4-12-6-12-36-18-36.. is 108.
30
18
108
108
108
108
24
The number 7 comes next.
60.75