Finding the Fourth Proportional to 11,086.18, 15,294.92 and 8,534.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,086.18 : 15,294.92 = 8,534.72 : x
2. Step 2: Convert to fraction form
   11,086.18/15,294.92 = 8,534.72/x
3. Step 3: Cross multiply
   11,086.18x = 15,294.92 × 8,534.72
4. Step 4: Simplify right side
   11,086.18x = 130,537,829.84
5. Step 5: Solve for x
   x = 130,537,829.84/11,086.18
6. Step 6: Final answer
   x = 11,774.82