Finding the Fourth Proportional to 9,116.72, 13,660.49 and 8,241.92

Step by Step Solution

1. Step 1: Write the proportion equation
   9,116.72 : 13,660.49 = 8,241.92 : x
2. Step 2: Convert to fraction form
   9,116.72/13,660.49 = 8,241.92/x
3. Step 3: Cross multiply
   9,116.72x = 13,660.49 × 8,241.92
4. Step 4: Simplify right side
   9,116.72x = 112,588,618.04
5. Step 5: Solve for x
   x = 112,588,618.04/9,116.72
6. Step 6: Final answer
   x = 12,349.69