Finding the Fourth Proportional to 16,403.42, 24,609.43 and 5,158.31

Step by Step Solution

1. Step 1: Write the proportion equation
   16,403.42 : 24,609.43 = 5,158.31 : x
2. Step 2: Convert to fraction form
   16,403.42/24,609.43 = 5,158.31/x
3. Step 3: Cross multiply
   16,403.42x = 24,609.43 × 5,158.31
4. Step 4: Simplify right side
   16,403.42x = 126,942,958.71
5. Step 5: Solve for x
   x = 126,942,958.71/16,403.42
6. Step 6: Final answer
   x = 7,738.81