Finding the Fourth Proportional to 8,761.74, 12,082.05 and 5,773.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,761.74 : 12,082.05 = 5,773.78 : x
2. Step 2: Convert to fraction form
   8,761.74/12,082.05 = 5,773.78/x
3. Step 3: Cross multiply
   8,761.74x = 12,082.05 × 5,773.78
4. Step 4: Simplify right side
   8,761.74x = 69,759,098.65
5. Step 5: Solve for x
   x = 69,759,098.65/8,761.74
6. Step 6: Final answer
   x = 7,961.79