Finding the Fourth Proportional to 33,128.59, 45,717.77 and 18,021.59

Step by Step Solution

1. Step 1: Write the proportion equation
   33,128.59 : 45,717.77 = 18,021.59 : x
2. Step 2: Convert to fraction form
   33,128.59/45,717.77 = 18,021.59/x
3. Step 3: Cross multiply
   33,128.59x = 45,717.77 × 18,021.59
4. Step 4: Simplify right side
   33,128.59x = 823,906,587.96
5. Step 5: Solve for x
   x = 823,906,587.96/33,128.59
6. Step 6: Final answer
   x = 24,869.96