Finding the Fourth Proportional to 6,857.12, 9,462.72 and 3,713.30

Step by Step Solution

1. Step 1: Write the proportion equation
   6,857.12 : 9,462.72 = 3,713.30 : x
2. Step 2: Convert to fraction form
   6,857.12/9,462.72 = 3,713.30/x
3. Step 3: Cross multiply
   6,857.12x = 9,462.72 × 3,713.30
4. Step 4: Simplify right side
   6,857.12x = 35,137,918.18
5. Step 5: Solve for x
   x = 35,137,918.18/6,857.12
6. Step 6: Final answer
   x = 5,124.30