Finding the Fourth Proportional to 8,760.49, 12,087.42 and 4,982.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,760.49 : 12,087.42 = 4,982.78 : x
2. Step 2: Convert to fraction form
   8,760.49/12,087.42 = 4,982.78/x
3. Step 3: Cross multiply
   8,760.49x = 12,087.42 × 4,982.78
4. Step 4: Simplify right side
   8,760.49x = 60,228,954.63
5. Step 5: Solve for x
   x = 60,228,954.63/8,760.49
6. Step 6: Final answer
   x = 6,875.07