Finding the Fourth Proportional to 8,859.30, 12,221.57 and 5,501.04

Step by Step Solution

1. Step 1: Write the proportion equation
   8,859.30 : 12,221.57 = 5,501.04 : x
2. Step 2: Convert to fraction form
   8,859.30/12,221.57 = 5,501.04/x
3. Step 3: Cross multiply
   8,859.30x = 12,221.57 × 5,501.04
4. Step 4: Simplify right side
   8,859.30x = 67,231,359.19
5. Step 5: Solve for x
   x = 67,231,359.19/8,859.30
6. Step 6: Final answer
   x = 7,588.79