Finding the Fourth Proportional to 6,425.20, 9,643.20 and 3,141.10

Step by Step Solution

1. Step 1: Write the proportion equation
   6,425.20 : 9,643.20 = 3,141.10 : x
2. Step 2: Convert to fraction form
   6,425.20/9,643.20 = 3,141.10/x
3. Step 3: Cross multiply
   6,425.20x = 9,643.20 × 3,141.10
4. Step 4: Simplify right side
   6,425.20x = 30,290,255.52
5. Step 5: Solve for x
   x = 30,290,255.52/6,425.20
6. Step 6: Final answer
   x = 4,714.29