Finding the Fourth Proportional to 22,728, 31,365.12 and 12,792

Step by Step Solution

1. Step 1: Write the proportion equation
   22,728 : 31,365.12 = 12,792 : x
2. Step 2: Convert to fraction form
   22,728/31,365.12 = 12,792/x
3. Step 3: Cross multiply
   22,728x = 31,365.12 × 12,792
4. Step 4: Simplify right side
   22,728x = 401,222,615.04
5. Step 5: Solve for x
   x = 401,222,615.04/22,728
6. Step 6: Final answer
   x = 17,653.23