Finding the Fourth Proportional to 6,487.35, 9,729.46 and 3,155.55

Step by Step Solution

1. Step 1: Write the proportion equation
   6,487.35 : 9,729.46 = 3,155.55 : x
2. Step 2: Convert to fraction form
   6,487.35/9,729.46 = 3,155.55/x
3. Step 3: Cross multiply
   6,487.35x = 9,729.46 × 3,155.55
4. Step 4: Simplify right side
   6,487.35x = 30,701,797.50
5. Step 5: Solve for x
   x = 30,701,797.50/6,487.35
6. Step 6: Final answer
   x = 4,732.56