Finding the Fourth Proportional to 8,359.79, 12,540.06 and 3,425.96

Step by Step Solution

1. Step 1: Write the proportion equation
   8,359.79 : 12,540.06 = 3,425.96 : x
2. Step 2: Convert to fraction form
   8,359.79/12,540.06 = 3,425.96/x
3. Step 3: Cross multiply
   8,359.79x = 12,540.06 × 3,425.96
4. Step 4: Simplify right side
   8,359.79x = 42,961,681.26
5. Step 5: Solve for x
   x = 42,961,681.26/8,359.79
6. Step 6: Final answer
   x = 5,139.09