Finding the Fourth Proportional to 8,803.72, 12,123.53 and 8,240.91

Step by Step Solution

1. Step 1: Write the proportion equation
   8,803.72 : 12,123.53 = 8,240.91 : x
2. Step 2: Convert to fraction form
   8,803.72/12,123.53 = 8,240.91/x
3. Step 3: Cross multiply
   8,803.72x = 12,123.53 × 8,240.91
4. Step 4: Simplify right side
   8,803.72x = 99,908,919.61
5. Step 5: Solve for x
   x = 99,908,919.61/8,803.72
6. Step 6: Final answer
   x = 11,348.49