Finding the Fourth Proportional to 16,231.77, 22,399.89 and 8,779.77

Step by Step Solution

1. Step 1: Write the proportion equation
   16,231.77 : 22,399.89 = 8,779.77 : x
2. Step 2: Convert to fraction form
   16,231.77/22,399.89 = 8,779.77/x
3. Step 3: Cross multiply
   16,231.77x = 22,399.89 × 8,779.77
4. Step 4: Simplify right side
   16,231.77x = 196,665,882.23
5. Step 5: Solve for x
   x = 196,665,882.23/16,231.77
6. Step 6: Final answer
   x = 12,116.11