Finding the Fourth Proportional to 22,239.82, 30,690.93 and 12,168.30

Step by Step Solution

1. Step 1: Write the proportion equation
   22,239.82 : 30,690.93 = 12,168.30 : x
2. Step 2: Convert to fraction form
   22,239.82/30,690.93 = 12,168.30/x
3. Step 3: Cross multiply
   22,239.82x = 30,690.93 × 12,168.30
4. Step 4: Simplify right side
   22,239.82x = 373,456,285.78
5. Step 5: Solve for x
   x = 373,456,285.78/22,239.82
6. Step 6: Final answer
   x = 16,792.24