Finding the Fourth Proportional to 16,238.72, 22,408.98 and 9,165.80

Step by Step Solution

1. Step 1: Write the proportion equation
   16,238.72 : 22,408.98 = 9,165.80 : x
2. Step 2: Convert to fraction form
   16,238.72/22,408.98 = 9,165.80/x
3. Step 3: Cross multiply
   16,238.72x = 22,408.98 × 9,165.80
4. Step 4: Simplify right side
   16,238.72x = 205,396,228.88
5. Step 5: Solve for x
   x = 205,396,228.88/16,238.72
6. Step 6: Final answer
   x = 12,648.55