Finding the Fourth Proportional to 16,423, 24,638.40 and 5,329.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,423 : 24,638.40 = 5,329.72 : x
2. Step 2: Convert to fraction form
   16,423/24,638.40 = 5,329.72/x
3. Step 3: Cross multiply
   16,423x = 24,638.40 × 5,329.72
4. Step 4: Simplify right side
   16,423x = 131,315,773.25
5. Step 5: Solve for x
   x = 131,315,773.25/16,423
6. Step 6: Final answer
   x = 7,995.85