Finding the Fourth Proportional to 8,801.72, 12,120.77 and 8,238.91

Step by Step Solution

1. Step 1: Write the proportion equation
   8,801.72 : 12,120.77 = 8,238.91 : x
2. Step 2: Convert to fraction form
   8,801.72/12,120.77 = 8,238.91/x
3. Step 3: Cross multiply
   8,801.72x = 12,120.77 × 8,238.91
4. Step 4: Simplify right side
   8,801.72x = 99,861,923.46
5. Step 5: Solve for x
   x = 99,861,923.46/8,801.72
6. Step 6: Final answer
   x = 11,345.73