Sorry for my late response… It was night time over here… 
Check the attached workflow. This is how you can achieve it… I have added comments as well for you to understand easily…
ExcelAppendData.xaml (8.9 KB)
Hope it helps!!!
Let know how it works for you…
prashant1603765
V_Roboto_V
ashokkarale
arivu96
sharazkm32
Anil_G
pikorpa
postwick
jaswanthvarma.gottumukkal
adi.mehare