Finding the Fourth Proportional to 11,085.40, 16,624.52 and 3,687.90

Step by Step Solution

1. Step 1: Write the proportion equation
   11,085.40 : 16,624.52 = 3,687.90 : x
2. Step 2: Convert to fraction form
   11,085.40/16,624.52 = 3,687.90/x
3. Step 3: Cross multiply
   11,085.40x = 16,624.52 × 3,687.90
4. Step 4: Simplify right side
   11,085.40x = 61,309,567.31
5. Step 5: Solve for x
   x = 61,309,567.31/11,085.40
6. Step 6: Final answer
   x = 5,530.66