Finding the Fourth Proportional to 9,140.49, 12,613.71 and 5,107.38

Step by Step Solution

1. Step 1: Write the proportion equation
   9,140.49 : 12,613.71 = 5,107.38 : x
2. Step 2: Convert to fraction form
   9,140.49/12,613.71 = 5,107.38/x
3. Step 3: Cross multiply
   9,140.49x = 12,613.71 × 5,107.38
4. Step 4: Simplify right side
   9,140.49x = 64,423,010.18
5. Step 5: Solve for x
   x = 64,423,010.18/9,140.49
6. Step 6: Final answer
   x = 7,048.09