Finding the Fourth Proportional to 11,083.16, 15,300.40 and 8,559.61

Step by Step Solution

1. Step 1: Write the proportion equation
   11,083.16 : 15,300.40 = 8,559.61 : x
2. Step 2: Convert to fraction form
   11,083.16/15,300.40 = 8,559.61/x
3. Step 3: Cross multiply
   11,083.16x = 15,300.40 × 8,559.61
4. Step 4: Simplify right side
   11,083.16x = 130,965,456.84
5. Step 5: Solve for x
   x = 130,965,456.84/11,083.16
6. Step 6: Final answer
   x = 11,816.62