Finding the Fourth Proportional to 9,229.72, 12,735.31 and 5,250.60

Step by Step Solution

1. Step 1: Write the proportion equation
   9,229.72 : 12,735.31 = 5,250.60 : x
2. Step 2: Convert to fraction form
   9,229.72/12,735.31 = 5,250.60/x
3. Step 3: Cross multiply
   9,229.72x = 12,735.31 × 5,250.60
4. Step 4: Simplify right side
   9,229.72x = 66,868,018.69
5. Step 5: Solve for x
   x = 66,868,018.69/9,229.72
6. Step 6: Final answer
   x = 7,244.86