Finding the Fourth Proportional to 9,540.72, 14,308.31 and 3,993.91

Step by Step Solution

1. Step 1: Write the proportion equation
   9,540.72 : 14,308.31 = 3,993.91 : x
2. Step 2: Convert to fraction form
   9,540.72/14,308.31 = 3,993.91/x
3. Step 3: Cross multiply
   9,540.72x = 14,308.31 × 3,993.91
4. Step 4: Simplify right side
   9,540.72x = 57,146,076.61
5. Step 5: Solve for x
   x = 57,146,076.61/9,540.72
6. Step 6: Final answer
   x = 5,989.70