Finding the Fourth Proportional to 22,111.72, 33,133.02 and 12,757.48

Step by Step Solution

1. Step 1: Write the proportion equation
   22,111.72 : 33,133.02 = 12,757.48 : x
2. Step 2: Convert to fraction form
   22,111.72/33,133.02 = 12,757.48/x
3. Step 3: Cross multiply
   22,111.72x = 33,133.02 × 12,757.48
4. Step 4: Simplify right side
   22,111.72x = 422,693,839.99
5. Step 5: Solve for x
   x = 422,693,839.99/22,111.72
6. Step 6: Final answer
   x = 19,116.28