Finding the Fourth Proportional to 37,587.78, 51,856.71 and 21,456.02

Step by Step Solution

1. Step 1: Write the proportion equation
   37,587.78 : 51,856.71 = 21,456.02 : x
2. Step 2: Convert to fraction form
   37,587.78/51,856.71 = 21,456.02/x
3. Step 3: Cross multiply
   37,587.78x = 51,856.71 × 21,456.02
4. Step 4: Simplify right side
   37,587.78x = 1,112,638,656.08
5. Step 5: Solve for x
   x = 1,112,638,656.08/37,587.78
6. Step 6: Final answer
   x = 29,601.07