Solution

We require that r1 v1 d1/m1 = r2 v2 d2/m2.


  vglycerine = Solve [ rho1 v1 d1/mu1 == rho2 v2 d2/mu2, v1 ]


  data = { rho1 -> 1.26  gm/cm^3,
           d2 -> 1.00 10^-2 cm,
           v2 -> 0.200  cm/sec, 
           mu2 -> 1.00 10^-2 gm/(cm sec),
           mu1 -> 23.3 gm/(cm sec), 
           d1 -> 5.00 cm, 
           rho2 -> 0.998 gm/cm^3}


  vglycerine[[1,1,2]] /. data

Up to 1.2 Drag coefficient and Reynolds number