Finding the Fourth Proportional to 9,156.62, 12,634.04 and 5,176.87

Step by Step Solution

1. Step 1: Write the proportion equation
   9,156.62 : 12,634.04 = 5,176.87 : x
2. Step 2: Convert to fraction form
   9,156.62/12,634.04 = 5,176.87/x
3. Step 3: Cross multiply
   9,156.62x = 12,634.04 × 5,176.87
4. Step 4: Simplify right side
   9,156.62x = 65,404,693.60
5. Step 5: Solve for x
   x = 65,404,693.60/9,156.62
6. Step 6: Final answer
   x = 7,142.89