Finding the Fourth Proportional to 8,805.28, 13,116.17 and 8,337.80

Step by Step Solution

1. Step 1: Write the proportion equation
   8,805.28 : 13,116.17 = 8,337.80 : x
2. Step 2: Convert to fraction form
   8,805.28/13,116.17 = 8,337.80/x
3. Step 3: Cross multiply
   8,805.28x = 13,116.17 × 8,337.80
4. Step 4: Simplify right side
   8,805.28x = 109,360,002.23
5. Step 5: Solve for x
   x = 109,360,002.23/8,805.28
6. Step 6: Final answer
   x = 12,419.82