Finding the Fourth Proportional to 6,131.50, 8,461.23 and 3,613.71

Step by Step Solution

1. Step 1: Write the proportion equation
   6,131.50 : 8,461.23 = 3,613.71 : x
2. Step 2: Convert to fraction form
   6,131.50/8,461.23 = 3,613.71/x
3. Step 3: Cross multiply
   6,131.50x = 8,461.23 × 3,613.71
4. Step 4: Simplify right side
   6,131.50x = 30,576,449.64
5. Step 5: Solve for x
   x = 30,576,449.64/6,131.50
6. Step 6: Final answer
   x = 4,986.78