Finding the Fourth Proportional to 9,617.88, 13,272.57 and 5,426.04

Step by Step Solution

1. Step 1: Write the proportion equation
   9,617.88 : 13,272.57 = 5,426.04 : x
2. Step 2: Convert to fraction form
   9,617.88/13,272.57 = 5,426.04/x
3. Step 3: Cross multiply
   9,617.88x = 13,272.57 × 5,426.04
4. Step 4: Simplify right side
   9,617.88x = 72,017,495.72
5. Step 5: Solve for x
   x = 72,017,495.72/9,617.88
6. Step 6: Final answer
   x = 7,487.88