Finding the Fourth Proportional to 16,612.50, 22,898.52 and 12,129.15

Step by Step Solution

1. Step 1: Write the proportion equation
   16,612.50 : 22,898.52 = 12,129.15 : x
2. Step 2: Convert to fraction form
   16,612.50/22,898.52 = 12,129.15/x
3. Step 3: Cross multiply
   16,612.50x = 22,898.52 × 12,129.15
4. Step 4: Simplify right side
   16,612.50x = 277,739,583.86
5. Step 5: Solve for x
   x = 277,739,583.86/16,612.50
6. Step 6: Final answer
   x = 16,718.71