Finding the Fourth Proportional to 11,086.89, 16,635.56 and 5,540.68

Step by Step Solution

1. Step 1: Write the proportion equation
   11,086.89 : 16,635.56 = 5,540.68 : x
2. Step 2: Convert to fraction form
   11,086.89/16,635.56 = 5,540.68/x
3. Step 3: Cross multiply
   11,086.89x = 16,635.56 × 5,540.68
4. Step 4: Simplify right side
   11,086.89x = 92,172,314.58
5. Step 5: Solve for x
   x = 92,172,314.58/11,086.89
6. Step 6: Final answer
   x = 8,313.63