Finding the Fourth Proportional to 6,625.28, 9,142.24 and 3,830.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,625.28 : 9,142.24 = 3,830.72 : x
2. Step 2: Convert to fraction form
   6,625.28/9,142.24 = 3,830.72/x
3. Step 3: Cross multiply
   6,625.28x = 9,142.24 × 3,830.72
4. Step 4: Simplify right side
   6,625.28x = 35,021,361.61
5. Step 5: Solve for x
   x = 35,021,361.61/6,625.28
6. Step 6: Final answer
   x = 5,286.02