Finding the Fourth Proportional to 9,160.26, 12,641.16 and 5,181.29

Step by Step Solution

1. Step 1: Write the proportion equation
   9,160.26 : 12,641.16 = 5,181.29 : x
2. Step 2: Convert to fraction form
   9,160.26/12,641.16 = 5,181.29/x
3. Step 3: Cross multiply
   9,160.26x = 12,641.16 × 5,181.29
4. Step 4: Simplify right side
   9,160.26x = 65,497,426.78
5. Step 5: Solve for x
   x = 65,497,426.78/9,160.26
6. Step 6: Final answer
   x = 7,150.17