Finding the Fourth Proportional to 22,239.83, 30,690.69 and 12,168.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,239.83 : 30,690.69 = 12,168.12 : x
2. Step 2: Convert to fraction form
   22,239.83/30,690.69 = 12,168.12/x
3. Step 3: Cross multiply
   22,239.83x = 30,690.69 × 12,168.12
4. Step 4: Simplify right side
   22,239.83x = 373,448,113.89
5. Step 5: Solve for x
   x = 373,448,113.89/22,239.83
6. Step 6: Final answer
   x = 16,791.86