Finding the Fourth Proportional to 16,288.50, 22,467.88 and 12,505.90

Step by Step Solution

1. Step 1: Write the proportion equation
   16,288.50 : 22,467.88 = 12,505.90 : x
2. Step 2: Convert to fraction form
   16,288.50/22,467.88 = 12,505.90/x
3. Step 3: Cross multiply
   16,288.50x = 22,467.88 × 12,505.90
4. Step 4: Simplify right side
   16,288.50x = 280,981,060.49
5. Step 5: Solve for x
   x = 280,981,060.49/16,288.50
6. Step 6: Final answer
   x = 17,250.27