Finding the Fourth Proportional to 6,247.82, 8,621.69 and 3,731.60

Step by Step Solution

1. Step 1: Write the proportion equation
   6,247.82 : 8,621.69 = 3,731.60 : x
2. Step 2: Convert to fraction form
   6,247.82/8,621.69 = 3,731.60/x
3. Step 3: Cross multiply
   6,247.82x = 8,621.69 × 3,731.60
4. Step 4: Simplify right side
   6,247.82x = 32,172,679.75
5. Step 5: Solve for x
   x = 32,172,679.75/6,247.82
6. Step 6: Final answer
   x = 5,149.42