Finding the Fourth Proportional to 22,128.75, 30,537.29 and 12,057.27

Step by Step Solution

1. Step 1: Write the proportion equation
   22,128.75 : 30,537.29 = 12,057.27 : x
2. Step 2: Convert to fraction form
   22,128.75/30,537.29 = 12,057.27/x
3. Step 3: Cross multiply
   22,128.75x = 30,537.29 × 12,057.27
4. Step 4: Simplify right side
   22,128.75x = 368,196,501.28
5. Step 5: Solve for x
   x = 368,196,501.28/22,128.75
6. Step 6: Final answer
   x = 16,638.83