Finding the Fourth Proportional to 16,231.50, 22,399.47 and 8,779.50

Step by Step Solution

1. Step 1: Write the proportion equation
   16,231.50 : 22,399.47 = 8,779.50 : x
2. Step 2: Convert to fraction form
   16,231.50/22,399.47 = 8,779.50/x
3. Step 3: Cross multiply
   16,231.50x = 22,399.47 × 8,779.50
4. Step 4: Simplify right side
   16,231.50x = 196,656,146.87
5. Step 5: Solve for x
   x = 196,656,146.87/16,231.50
6. Step 6: Final answer
   x = 12,115.71