Finding the Fourth Proportional to 11,084.16, 15,301.78 and 8,560.61

Step by Step Solution

1. Step 1: Write the proportion equation
   11,084.16 : 15,301.78 = 8,560.61 : x
2. Step 2: Convert to fraction form
   11,084.16/15,301.78 = 8,560.61/x
3. Step 3: Cross multiply
   11,084.16x = 15,301.78 × 8,560.61
4. Step 4: Simplify right side
   11,084.16x = 130,992,570.89
5. Step 5: Solve for x
   x = 130,992,570.89/11,084.16
6. Step 6: Final answer
   x = 11,818.00