Finding the Fourth Proportional to 6,242.31, 8,615.86 and 3,591.25

Step by Step Solution

1. Step 1: Write the proportion equation
   6,242.31 : 8,615.86 = 3,591.25 : x
2. Step 2: Convert to fraction form
   6,242.31/8,615.86 = 3,591.25/x
3. Step 3: Cross multiply
   6,242.31x = 8,615.86 × 3,591.25
4. Step 4: Simplify right side
   6,242.31x = 30,941,676.71
5. Step 5: Solve for x
   x = 30,941,676.71/6,242.31
6. Step 6: Final answer
   x = 4,956.77