Finding the Fourth Proportional to 33,128.69, 45,705.06 and 21,171.26

Step by Step Solution

1. Step 1: Write the proportion equation
   33,128.69 : 45,705.06 = 21,171.26 : x
2. Step 2: Convert to fraction form
   33,128.69/45,705.06 = 21,171.26/x
3. Step 3: Cross multiply
   33,128.69x = 45,705.06 × 21,171.26
4. Step 4: Simplify right side
   33,128.69x = 967,633,480.05
5. Step 5: Solve for x
   x = 967,633,480.05/33,128.69
6. Step 6: Final answer
   x = 29,208.33