Finding the Fourth Proportional to 11,085.42, 16,624.50 and 3,687.90

Step by Step Solution

1. Step 1: Write the proportion equation
   11,085.42 : 16,624.50 = 3,687.90 : x
2. Step 2: Convert to fraction form
   11,085.42/16,624.50 = 3,687.90/x
3. Step 3: Cross multiply
   11,085.42x = 16,624.50 × 3,687.90
4. Step 4: Simplify right side
   11,085.42x = 61,309,493.55
5. Step 5: Solve for x
   x = 61,309,493.55/11,085.42
6. Step 6: Final answer
   x = 5,530.64