Finding the Fourth Proportional to 22,400.79, 30,912.42 and 12,329.22

Step by Step Solution

1. Step 1: Write the proportion equation
   22,400.79 : 30,912.42 = 12,329.22 : x
2. Step 2: Convert to fraction form
   22,400.79/30,912.42 = 12,329.22/x
3. Step 3: Cross multiply
   22,400.79x = 30,912.42 × 12,329.22
4. Step 4: Simplify right side
   22,400.79x = 381,126,026.91
5. Step 5: Solve for x
   x = 381,126,026.91/22,400.79
6. Step 6: Final answer
   x = 17,013.95