Finding the Fourth Proportional to 15,723.69, 23,578.61 and 8,326.42

Step by Step Solution

1. Step 1: Write the proportion equation
   15,723.69 : 23,578.61 = 8,326.42 : x
2. Step 2: Convert to fraction form
   15,723.69/23,578.61 = 8,326.42/x
3. Step 3: Cross multiply
   15,723.69x = 23,578.61 × 8,326.42
4. Step 4: Simplify right side
   15,723.69x = 196,325,430.69
5. Step 5: Solve for x
   x = 196,325,430.69/15,723.69
6. Step 6: Final answer
   x = 12,485.97