Finding the Fourth Proportional to 8,554.50, 12,831.78 and 2,398.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,554.50 : 12,831.78 = 2,398.50 : x
2. Step 2: Convert to fraction form
   8,554.50/12,831.78 = 2,398.50/x
3. Step 3: Cross multiply
   8,554.50x = 12,831.78 × 2,398.50
4. Step 4: Simplify right side
   8,554.50x = 30,777,024.33
5. Step 5: Solve for x
   x = 30,777,024.33/8,554.50
6. Step 6: Final answer
   x = 3,597.76