Finding the Fourth Proportional to 33,105.72, 45,687.42 and 18,571.32

Step by Step Solution

1. Step 1: Write the proportion equation
   33,105.72 : 45,687.42 = 18,571.32 : x
2. Step 2: Convert to fraction form
   33,105.72/45,687.42 = 18,571.32/x
3. Step 3: Cross multiply
   33,105.72x = 45,687.42 × 18,571.32
4. Step 4: Simplify right side
   33,105.72x = 848,475,696.79
5. Step 5: Solve for x
   x = 848,475,696.79/33,105.72
6. Step 6: Final answer
   x = 25,629.28