Finding the Fourth Proportional to 8,849.76, 12,210.98 and 5,660.61

Step by Step Solution

1. Step 1: Write the proportion equation
   8,849.76 : 12,210.98 = 5,660.61 : x
2. Step 2: Convert to fraction form
   8,849.76/12,210.98 = 5,660.61/x
3. Step 3: Cross multiply
   8,849.76x = 12,210.98 × 5,660.61
4. Step 4: Simplify right side
   8,849.76x = 69,121,571.67
5. Step 5: Solve for x
   x = 69,121,571.67/8,849.76
6. Step 6: Final answer
   x = 7,810.56