Finding the Fourth Proportional to 22,143.52, 33,142.74 and 12,133

Step by Step Solution

1. Step 1: Write the proportion equation
   22,143.52 : 33,142.74 = 12,133 : x
2. Step 2: Convert to fraction form
   22,143.52/33,142.74 = 12,133/x
3. Step 3: Cross multiply
   22,143.52x = 33,142.74 × 12,133
4. Step 4: Simplify right side
   22,143.52x = 402,120,864.42
5. Step 5: Solve for x
   x = 402,120,864.42/22,143.52
6. Step 6: Final answer
   x = 18,159.75