Finding the Fourth Proportional to 8,757.16, 13,131.42 and 3,206.32

Step by Step Solution

1. Step 1: Write the proportion equation
   8,757.16 : 13,131.42 = 3,206.32 : x
2. Step 2: Convert to fraction form
   8,757.16/13,131.42 = 3,206.32/x
3. Step 3: Cross multiply
   8,757.16x = 13,131.42 × 3,206.32
4. Step 4: Simplify right side
   8,757.16x = 42,103,534.57
5. Step 5: Solve for x
   x = 42,103,534.57/8,757.16
6. Step 6: Final answer
   x = 4,807.90