Finding the Fourth Proportional to 16,228.72, 22,395.96 and 9,519.48

Step by Step Solution

1. Step 1: Write the proportion equation
   16,228.72 : 22,395.96 = 9,519.48 : x
2. Step 2: Convert to fraction form
   16,228.72/22,395.96 = 9,519.48/x
3. Step 3: Cross multiply
   16,228.72x = 22,395.96 × 9,519.48
4. Step 4: Simplify right side
   16,228.72x = 213,197,893.30
5. Step 5: Solve for x
   x = 213,197,893.30/16,228.72
6. Step 6: Final answer
   x = 13,137.07