Finding the Fourth Proportional to 22,403.76, 30,915.73 and 12,843.53

Step by Step Solution

1. Step 1: Write the proportion equation
   22,403.76 : 30,915.73 = 12,843.53 : x
2. Step 2: Convert to fraction form
   22,403.76/30,915.73 = 12,843.53/x
3. Step 3: Cross multiply
   22,403.76x = 30,915.73 × 12,843.53
4. Step 4: Simplify right side
   22,403.76x = 397,067,105.73
5. Step 5: Solve for x
   x = 397,067,105.73/22,403.76
6. Step 6: Final answer
   x = 17,723.24