Finding the Fourth Proportional to 12,337.10, 18,520.05 and 7,076.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,337.10 : 18,520.05 = 7,076.30 : x
2. Step 2: Convert to fraction form
   12,337.10/18,520.05 = 7,076.30/x
3. Step 3: Cross multiply
   12,337.10x = 18,520.05 × 7,076.30
4. Step 4: Simplify right side
   12,337.10x = 131,053,429.82
5. Step 5: Solve for x
   x = 131,053,429.82/12,337.10
6. Step 6: Final answer
   x = 10,622.71