Finding the Fourth Proportional to 16,431, 24,641.28 and 5,335.12

Step by Step Solution

1. Step 1: Write the proportion equation
   16,431 : 24,641.28 = 5,335.12 : x
2. Step 2: Convert to fraction form
   16,431/24,641.28 = 5,335.12/x
3. Step 3: Cross multiply
   16,431x = 24,641.28 × 5,335.12
4. Step 4: Simplify right side
   16,431x = 131,464,185.75
5. Step 5: Solve for x
   x = 131,464,185.75/16,431
6. Step 6: Final answer
   x = 8,000.99