Finding the Fourth Proportional to 6,405.59, 8,839.28 and 3,716.89

Step by Step Solution

1. Step 1: Write the proportion equation
   6,405.59 : 8,839.28 = 3,716.89 : x
2. Step 2: Convert to fraction form
   6,405.59/8,839.28 = 3,716.89/x
3. Step 3: Cross multiply
   6,405.59x = 8,839.28 × 3,716.89
4. Step 4: Simplify right side
   6,405.59x = 32,854,613.41
5. Step 5: Solve for x
   x = 32,854,613.41/6,405.59
6. Step 6: Final answer
   x = 5,129.05