Finding the Fourth Proportional to 22,128.67, 30,537.17 and 12,057.18

Step by Step Solution

1. Step 1: Write the proportion equation
   22,128.67 : 30,537.17 = 12,057.18 : x
2. Step 2: Convert to fraction form
   22,128.67/30,537.17 = 12,057.18/x
3. Step 3: Cross multiply
   22,128.67x = 30,537.17 × 12,057.18
4. Step 4: Simplify right side
   22,128.67x = 368,192,155.38
5. Step 5: Solve for x
   x = 368,192,155.38/22,128.67
6. Step 6: Final answer
   x = 16,638.69