Finding the Fourth Proportional to 11,086.63, 16,617.39 and 3,689.35

Step by Step Solution

1. Step 1: Write the proportion equation
   11,086.63 : 16,617.39 = 3,689.35 : x
2. Step 2: Convert to fraction form
   11,086.63/16,617.39 = 3,689.35/x
3. Step 3: Cross multiply
   11,086.63x = 16,617.39 × 3,689.35
4. Step 4: Simplify right side
   11,086.63x = 61,307,367.80
5. Step 5: Solve for x
   x = 61,307,367.80/11,086.63
6. Step 6: Final answer
   x = 5,529.85