Finding the Fourth Proportional to 16,767.27, 23,138.71 and 9,213.68

Step by Step Solution

1. Step 1: Write the proportion equation
   16,767.27 : 23,138.71 = 9,213.68 : x
2. Step 2: Convert to fraction form
   16,767.27/23,138.71 = 9,213.68/x
3. Step 3: Cross multiply
   16,767.27x = 23,138.71 × 9,213.68
4. Step 4: Simplify right side
   16,767.27x = 213,192,669.55
5. Step 5: Solve for x
   x = 213,192,669.55/16,767.27
6. Step 6: Final answer
   x = 12,714.81