Finding the Fourth Proportional to 22,342, 30,831.96 and 12,406

Step by Step Solution

1. Step 1: Write the proportion equation
   22,342 : 30,831.96 = 12,406 : x
2. Step 2: Convert to fraction form
   22,342/30,831.96 = 12,406/x
3. Step 3: Cross multiply
   22,342x = 30,831.96 × 12,406
4. Step 4: Simplify right side
   22,342x = 382,501,295.76
5. Step 5: Solve for x
   x = 382,501,295.76/22,342
6. Step 6: Final answer
   x = 17,120.28