Finding the Fourth Proportional to 6,570.24, 9,857.28 and 3,102.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,570.24 : 9,857.28 = 3,102.72 : x
2. Step 2: Convert to fraction form
   6,570.24/9,857.28 = 3,102.72/x
3. Step 3: Cross multiply
   6,570.24x = 9,857.28 × 3,102.72
4. Step 4: Simplify right side
   6,570.24x = 30,584,379.80
5. Step 5: Solve for x
   x = 30,584,379.80/6,570.24
6. Step 6: Final answer
   x = 4,654.99