Finding the Fourth Proportional to 15,502.69, 21,393.25 and 8,788.93

Step by Step Solution

1. Step 1: Write the proportion equation
   15,502.69 : 21,393.25 = 8,788.93 : x
2. Step 2: Convert to fraction form
   15,502.69/21,393.25 = 8,788.93/x
3. Step 3: Cross multiply
   15,502.69x = 21,393.25 × 8,788.93
4. Step 4: Simplify right side
   15,502.69x = 188,023,776.72
5. Step 5: Solve for x
   x = 188,023,776.72/15,502.69
6. Step 6: Final answer
   x = 12,128.46