Consider a $1$:$1$ electrolyte in the moving boundary apparatus consisting of a cation, $x^{+},$ and an anion, $Y^{-}.$ If the concentration of the electrolyte is $0\mathrm{.}087M,$ the total current is $2\mathrm{.}387mA,$ the current carried by $x^{+}$is $1\mathrm{.}163mA,$ and the cross$-$ sectional area of the tube is $0\mathrm{.}051c{m}^2,$ then what is the drift velocity of $x^{+}?$

Report your answer with $2$ decimal places, in units of $\frac{m}{s}.$