Finding the Fourth Proportional to 6,863.43, 10,287.20 and 3,157.89

Step by Step Solution

1. Step 1: Write the proportion equation
   6,863.43 : 10,287.20 = 3,157.89 : x
2. Step 2: Convert to fraction form
   6,863.43/10,287.20 = 3,157.89/x
3. Step 3: Cross multiply
   6,863.43x = 10,287.20 × 3,157.89
4. Step 4: Simplify right side
   6,863.43x = 32,485,830.22
5. Step 5: Solve for x
   x = 32,485,830.22/6,863.43
6. Step 6: Final answer
   x = 4,733.18