Finding the Fourth Proportional to 16,454.78, 22,707.60 and 9,286.22

Step by Step Solution

1. Step 1: Write the proportion equation
   16,454.78 : 22,707.60 = 9,286.22 : x
2. Step 2: Convert to fraction form
   16,454.78/22,707.60 = 9,286.22/x
3. Step 3: Cross multiply
   16,454.78x = 22,707.60 × 9,286.22
4. Step 4: Simplify right side
   16,454.78x = 210,867,609.30
5. Step 5: Solve for x
   x = 210,867,609.30/16,454.78
6. Step 6: Final answer
   x = 12,814.98