Finding the Fourth Proportional to 39,815.72, 59,732.22 and 12,113

Step by Step Solution

1. Step 1: Write the proportion equation
   39,815.72 : 59,732.22 = 12,113 : x
2. Step 2: Convert to fraction form
   39,815.72/59,732.22 = 12,113/x
3. Step 3: Cross multiply
   39,815.72x = 59,732.22 × 12,113
4. Step 4: Simplify right side
   39,815.72x = 723,536,380.86
5. Step 5: Solve for x
   x = 723,536,380.86/39,815.72
6. Step 6: Final answer
   x = 18,172.13