Finding the Fourth Proportional to 16,211.82, 22,372.33 and 9,138.24

Step by Step Solution

1. Step 1: Write the proportion equation
   16,211.82 : 22,372.33 = 9,138.24 : x
2. Step 2: Convert to fraction form
   16,211.82/22,372.33 = 9,138.24/x
3. Step 3: Cross multiply
   16,211.82x = 22,372.33 × 9,138.24
4. Step 4: Simplify right side
   16,211.82x = 204,443,752.41
5. Step 5: Solve for x
   x = 204,443,752.41/16,211.82
6. Step 6: Final answer
   x = 12,610.78