Finding the Fourth Proportional to 16,439.50, 22,686.52 and 8,987.50

Step by Step Solution

1. Step 1: Write the proportion equation
   16,439.50 : 22,686.52 = 8,987.50 : x
2. Step 2: Convert to fraction form
   16,439.50/22,686.52 = 8,987.50/x
3. Step 3: Cross multiply
   16,439.50x = 22,686.52 × 8,987.50
4. Step 4: Simplify right side
   16,439.50x = 203,895,098.50
5. Step 5: Solve for x
   x = 203,895,098.50/16,439.50
6. Step 6: Final answer
   x = 12,402.76