Finding the Fourth Proportional to 8,888.71, 12,268.79 and 5,529.61

Step by Step Solution

1. Step 1: Write the proportion equation
   8,888.71 : 12,268.79 = 5,529.61 : x
2. Step 2: Convert to fraction form
   8,888.71/12,268.79 = 5,529.61/x
3. Step 3: Cross multiply
   8,888.71x = 12,268.79 × 5,529.61
4. Step 4: Simplify right side
   8,888.71x = 67,841,623.87
5. Step 5: Solve for x
   x = 67,841,623.87/8,888.71
6. Step 6: Final answer
   x = 7,632.34