Finding the Fourth Proportional to 22,231.34, 30,680.04 and 12,159.18

Step by Step Solution

1. Step 1: Write the proportion equation
   22,231.34 : 30,680.04 = 12,159.18 : x
2. Step 2: Convert to fraction form
   22,231.34/30,680.04 = 12,159.18/x
3. Step 3: Cross multiply
   22,231.34x = 30,680.04 × 12,159.18
4. Step 4: Simplify right side
   22,231.34x = 373,044,128.77
5. Step 5: Solve for x
   x = 373,044,128.77/22,231.34
6. Step 6: Final answer
   x = 16,780.10