Finding the Fourth Proportional to 9,897.99, 13,658.89 and 5,917.04

Step by Step Solution

1. Step 1: Write the proportion equation
   9,897.99 : 13,658.89 = 5,917.04 : x
2. Step 2: Convert to fraction form
   9,897.99/13,658.89 = 5,917.04/x
3. Step 3: Cross multiply
   9,897.99x = 13,658.89 × 5,917.04
4. Step 4: Simplify right side
   9,897.99x = 80,820,198.49
5. Step 5: Solve for x
   x = 80,820,198.49/9,897.99
6. Step 6: Final answer
   x = 8,165.31