Finding the Fourth Proportional to 11,086.34, 16,631.32 and 3,690.02

Step by Step Solution

1. Step 1: Write the proportion equation
   11,086.34 : 16,631.32 = 3,690.02 : x
2. Step 2: Convert to fraction form
   11,086.34/16,631.32 = 3,690.02/x
3. Step 3: Cross multiply
   11,086.34x = 16,631.32 × 3,690.02
4. Step 4: Simplify right side
   11,086.34x = 61,369,903.43
5. Step 5: Solve for x
   x = 61,369,903.43/11,086.34
6. Step 6: Final answer
   x = 5,535.63