Finding the Fourth Proportional to 16,113.22, 22,234.78 and 9,399.43

Step by Step Solution

1. Step 1: Write the proportion equation
   16,113.22 : 22,234.78 = 9,399.43 : x
2. Step 2: Convert to fraction form
   16,113.22/22,234.78 = 9,399.43/x
3. Step 3: Cross multiply
   16,113.22x = 22,234.78 × 9,399.43
4. Step 4: Simplify right side
   16,113.22x = 208,994,258.18
5. Step 5: Solve for x
   x = 208,994,258.18/16,113.22
6. Step 6: Final answer
   x = 12,970.36