Finding the Fourth Proportional to 16,687.50, 23,031.48 and 9,612.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,687.50 : 23,031.48 = 9,612.72 : x
2. Step 2: Convert to fraction form
   16,687.50/23,031.48 = 9,612.72/x
3. Step 3: Cross multiply
   16,687.50x = 23,031.48 × 9,612.72
4. Step 4: Simplify right side
   16,687.50x = 221,395,168.43
5. Step 5: Solve for x
   x = 221,395,168.43/16,687.50
6. Step 6: Final answer
   x = 13,267.13