Finding the Fourth Proportional to 22,279.96, 30,747 and 12,209.29

Step by Step Solution

1. Step 1: Write the proportion equation
   22,279.96 : 30,747 = 12,209.29 : x
2. Step 2: Convert to fraction form
   22,279.96/30,747 = 12,209.29/x
3. Step 3: Cross multiply
   22,279.96x = 30,747 × 12,209.29
4. Step 4: Simplify right side
   22,279.96x = 375,399,039.63
5. Step 5: Solve for x
   x = 375,399,039.63/22,279.96
6. Step 6: Final answer
   x = 16,849.18