Finding the Fourth Proportional to 22,287.86, 30,757.13 and 12,216.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,287.86 : 30,757.13 = 12,216.72 : x
2. Step 2: Convert to fraction form
   22,287.86/30,757.13 = 12,216.72/x
3. Step 3: Cross multiply
   22,287.86x = 30,757.13 × 12,216.72
4. Step 4: Simplify right side
   22,287.86x = 375,751,245.21
5. Step 5: Solve for x
   x = 375,751,245.21/22,287.86
6. Step 6: Final answer
   x = 16,859.01