Finding the Fourth Proportional to 22,214.20, 30,656.42 and 12,143.31

Step by Step Solution

1. Step 1: Write the proportion equation
   22,214.20 : 30,656.42 = 12,143.31 : x
2. Step 2: Convert to fraction form
   22,214.20/30,656.42 = 12,143.31/x
3. Step 3: Cross multiply
   22,214.20x = 30,656.42 × 12,143.31
4. Step 4: Simplify right side
   22,214.20x = 372,270,411.55
5. Step 5: Solve for x
   x = 372,270,411.55/22,214.20
6. Step 6: Final answer
   x = 16,758.22