Finding the Fourth Proportional to 6,570.56, 9,860.16 and 3,105.92

Step by Step Solution

1. Step 1: Write the proportion equation
   6,570.56 : 9,860.16 = 3,105.92 : x
2. Step 2: Convert to fraction form
   6,570.56/9,860.16 = 3,105.92/x
3. Step 3: Cross multiply
   6,570.56x = 9,860.16 × 3,105.92
4. Step 4: Simplify right side
   6,570.56x = 30,624,868.15
5. Step 5: Solve for x
   x = 30,624,868.15/6,570.56
6. Step 6: Final answer
   x = 4,660.92