Finding the Fourth Proportional to 15,250.39, 21,042.77 and 8,789.02

Step by Step Solution

1. Step 1: Write the proportion equation
   15,250.39 : 21,042.77 = 8,789.02 : x
2. Step 2: Convert to fraction form
   15,250.39/21,042.77 = 8,789.02/x
3. Step 3: Cross multiply
   15,250.39x = 21,042.77 × 8,789.02
4. Step 4: Simplify right side
   15,250.39x = 184,945,229.83
5. Step 5: Solve for x
   x = 184,945,229.83/15,250.39
6. Step 6: Final answer
   x = 12,127.25