Finding the Fourth Proportional to 13,417.38, 18,516.18 and 7,449.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,417.38 : 18,516.18 = 7,449.42 : x
2. Step 2: Convert to fraction form
   13,417.38/18,516.18 = 7,449.42/x
3. Step 3: Cross multiply
   13,417.38x = 18,516.18 × 7,449.42
4. Step 4: Simplify right side
   13,417.38x = 137,934,801.62
5. Step 5: Solve for x
   x = 137,934,801.62/13,417.38
6. Step 6: Final answer
   x = 10,280.31