Finding the Fourth Proportional to 16,408.16, 22,644.24 and 12,422.96

Step by Step Solution

1. Step 1: Write the proportion equation
   16,408.16 : 22,644.24 = 12,422.96 : x
2. Step 2: Convert to fraction form
   16,408.16/22,644.24 = 12,422.96/x
3. Step 3: Cross multiply
   16,408.16x = 22,644.24 × 12,422.96
4. Step 4: Simplify right side
   16,408.16x = 281,308,487.75
5. Step 5: Solve for x
   x = 281,308,487.75/16,408.16
6. Step 6: Final answer
   x = 17,144.43