Finding the Fourth Proportional to 22,042, 30,418.20 and 12,106

Step by Step Solution

1. Step 1: Write the proportion equation
   22,042 : 30,418.20 = 12,106 : x
2. Step 2: Convert to fraction form
   22,042/30,418.20 = 12,106/x
3. Step 3: Cross multiply
   22,042x = 30,418.20 × 12,106
4. Step 4: Simplify right side
   22,042x = 368,242,729.20
5. Step 5: Solve for x
   x = 368,242,729.20/22,042
6. Step 6: Final answer
   x = 16,706.41