Finding the Fourth Proportional to 12,280.82, 18,424.88 and 5,710.91

Step by Step Solution

1. Step 1: Write the proportion equation
   12,280.82 : 18,424.88 = 5,710.91 : x
2. Step 2: Convert to fraction form
   12,280.82/18,424.88 = 5,710.91/x
3. Step 3: Cross multiply
   12,280.82x = 18,424.88 × 5,710.91
4. Step 4: Simplify right side
   12,280.82x = 105,222,891.78
5. Step 5: Solve for x
   x = 105,222,891.78/12,280.82
6. Step 6: Final answer
   x = 8,568.07