Finding the Fourth Proportional to 9,150.52, 12,629.54 and 5,171.68

Step by Step Solution

1. Step 1: Write the proportion equation
   9,150.52 : 12,629.54 = 5,171.68 : x
2. Step 2: Convert to fraction form
   9,150.52/12,629.54 = 5,171.68/x
3. Step 3: Cross multiply
   9,150.52x = 12,629.54 × 5,171.68
4. Step 4: Simplify right side
   9,150.52x = 65,315,939.43
5. Step 5: Solve for x
   x = 65,315,939.43/9,150.52
6. Step 6: Final answer
   x = 7,137.95