Finding the Fourth Proportional to 8,287.42, 12,431.05 and 2,443.94

Step by Step Solution

1. Step 1: Write the proportion equation
   8,287.42 : 12,431.05 = 2,443.94 : x
2. Step 2: Convert to fraction form
   8,287.42/12,431.05 = 2,443.94/x
3. Step 3: Cross multiply
   8,287.42x = 12,431.05 × 2,443.94
4. Step 4: Simplify right side
   8,287.42x = 30,380,740.34
5. Step 5: Solve for x
   x = 30,380,740.34/8,287.42
6. Step 6: Final answer
   x = 3,665.89