Finding the Fourth Proportional to 3,731.87, 5,589.61 and 3,657.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,731.87 : 5,589.61 = 3,657.15 : x
2. Step 2: Convert to fraction form
   3,731.87/5,589.61 = 3,657.15/x
3. Step 3: Cross multiply
   3,731.87x = 5,589.61 × 3,657.15
4. Step 4: Simplify right side
   3,731.87x = 20,442,033.07
5. Step 5: Solve for x
   x = 20,442,033.07/3,731.87
6. Step 6: Final answer
   x = 5,477.69