Finding the Fourth Proportional to 9,150.09, 12,627.05 and 5,171.97

Step by Step Solution

1. Step 1: Write the proportion equation
   9,150.09 : 12,627.05 = 5,171.97 : x
2. Step 2: Convert to fraction form
   9,150.09/12,627.05 = 5,171.97/x
3. Step 3: Cross multiply
   9,150.09x = 12,627.05 × 5,171.97
4. Step 4: Simplify right side
   9,150.09x = 65,306,723.79
5. Step 5: Solve for x
   x = 65,306,723.79/9,150.09
6. Step 6: Final answer
   x = 7,137.28