Find a starting solution to the given transportation Approximation Method. The values given in the interior boxes are the cost of transportation between the corresponding source $($S$)$ and destination $($D$)$ and the values given in the right margin and lower margin are the supply capacity and demands of the sources and destinations respectively.

$\backslash$table$[[,D_1,D_2,D_3,D_4,$Supply$],[S_1,5,2,4,3,22],[S_2,4,8,1,6,15],[S_3,4,6,7,5,8],[$Demand$,7,12,17,9,]]$