Finding the Fourth Proportional to 15,423.52, 21,284.89 and 8,710.15

Step by Step Solution

1. Step 1: Write the proportion equation
   15,423.52 : 21,284.89 = 8,710.15 : x
2. Step 2: Convert to fraction form
   15,423.52/21,284.89 = 8,710.15/x
3. Step 3: Cross multiply
   15,423.52x = 21,284.89 × 8,710.15
4. Step 4: Simplify right side
   15,423.52x = 185,394,701.61
5. Step 5: Solve for x
   x = 185,394,701.61/15,423.52
6. Step 6: Final answer
   x = 12,020.26