Finding the Fourth Proportional to 12,337.72, 18,505.86 and 3,103

Step by Step Solution

1. Step 1: Write the proportion equation
   12,337.72 : 18,505.86 = 3,103 : x
2. Step 2: Convert to fraction form
   12,337.72/18,505.86 = 3,103/x
3. Step 3: Cross multiply
   12,337.72x = 18,505.86 × 3,103
4. Step 4: Simplify right side
   12,337.72x = 57,423,683.58
5. Step 5: Solve for x
   x = 57,423,683.58/12,337.72
6. Step 6: Final answer
   x = 4,654.32