Finding the Fourth Proportional to 8,911.34, 13,359.49 and 5,617.17

Step by Step Solution

1. Step 1: Write the proportion equation
   8,911.34 : 13,359.49 = 5,617.17 : x
2. Step 2: Convert to fraction form
   8,911.34/13,359.49 = 5,617.17/x
3. Step 3: Cross multiply
   8,911.34x = 13,359.49 × 5,617.17
4. Step 4: Simplify right side
   8,911.34x = 75,042,589.47
5. Step 5: Solve for x
   x = 75,042,589.47/8,911.34
6. Step 6: Final answer
   x = 8,421.02