Finding the Fourth Proportional to 11,086.12, 16,629.30 and 3,690.56

Step by Step Solution

1. Step 1: Write the proportion equation
   11,086.12 : 16,629.30 = 3,690.56 : x
2. Step 2: Convert to fraction form
   11,086.12/16,629.30 = 3,690.56/x
3. Step 3: Cross multiply
   11,086.12x = 16,629.30 × 3,690.56
4. Step 4: Simplify right side
   11,086.12x = 61,371,470.98
5. Step 5: Solve for x
   x = 61,371,470.98/11,086.12
6. Step 6: Final answer
   x = 5,535.89