Finding the Fourth Proportional to 11,083.34, 15,300.66 and 8,559.78

Step by Step Solution

1. Step 1: Write the proportion equation
   11,083.34 : 15,300.66 = 8,559.78 : x
2. Step 2: Convert to fraction form
   11,083.34/15,300.66 = 8,559.78/x
3. Step 3: Cross multiply
   11,083.34x = 15,300.66 × 8,559.78
4. Step 4: Simplify right side
   11,083.34x = 130,970,283.45
5. Step 5: Solve for x
   x = 130,970,283.45/11,083.34
6. Step 6: Final answer
   x = 11,816.86