Finding the Fourth Proportional to 9,617.59, 13,272.65 and 5,425.75

Step by Step Solution

1. Step 1: Write the proportion equation
   9,617.59 : 13,272.65 = 5,425.75 : x
2. Step 2: Convert to fraction form
   9,617.59/13,272.65 = 5,425.75/x
3. Step 3: Cross multiply
   9,617.59x = 13,272.65 × 5,425.75
4. Step 4: Simplify right side
   9,617.59x = 72,014,080.74
5. Step 5: Solve for x
   x = 72,014,080.74/9,617.59
6. Step 6: Final answer
   x = 7,487.75