Finding the Fourth Proportional to 11,615.50, 17,425.41 and 5,459.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,615.50 : 17,425.41 = 5,459.50 : x
2. Step 2: Convert to fraction form
   11,615.50/17,425.41 = 5,459.50/x
3. Step 3: Cross multiply
   11,615.50x = 17,425.41 × 5,459.50
4. Step 4: Simplify right side
   11,615.50x = 95,134,025.90
5. Step 5: Solve for x
   x = 95,134,025.90/11,615.50
6. Step 6: Final answer
   x = 8,190.27