Finding the Fourth Proportional to 12,162.52, 16,787.46 and 7,925.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,162.52 : 16,787.46 = 7,925.20 : x
2. Step 2: Convert to fraction form
   12,162.52/16,787.46 = 7,925.20/x
3. Step 3: Cross multiply
   12,162.52x = 16,787.46 × 7,925.20
4. Step 4: Simplify right side
   12,162.52x = 133,043,977.99
5. Step 5: Solve for x
   x = 133,043,977.99/12,162.52
6. Step 6: Final answer
   x = 10,938.85