Finding the Fourth Proportional to 8,760.74, 12,080.67 and 5,772.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,760.74 : 12,080.67 = 5,772.78 : x
2. Step 2: Convert to fraction form
   8,760.74/12,080.67 = 5,772.78/x
3. Step 3: Cross multiply
   8,760.74x = 12,080.67 × 5,772.78
4. Step 4: Simplify right side
   8,760.74x = 69,739,050.16
5. Step 5: Solve for x
   x = 69,739,050.16/8,760.74
6. Step 6: Final answer
   x = 7,960.41