Finding the Fourth Proportional to 16,297.21, 24,404.43 and 13,657.78

Step by Step Solution

1. Step 1: Write the proportion equation
   16,297.21 : 24,404.43 = 13,657.78 : x
2. Step 2: Convert to fraction form
   16,297.21/24,404.43 = 13,657.78/x
3. Step 3: Cross multiply
   16,297.21x = 24,404.43 × 13,657.78
4. Step 4: Simplify right side
   16,297.21x = 333,310,335.97
5. Step 5: Solve for x
   x = 333,310,335.97/16,297.21
6. Step 6: Final answer
   x = 20,451.99