Finding the Fourth Proportional to 33,121.89, 45,694.72 and 18,778.70

Step by Step Solution

1. Step 1: Write the proportion equation
   33,121.89 : 45,694.72 = 18,778.70 : x
2. Step 2: Convert to fraction form
   33,121.89/45,694.72 = 18,778.70/x
3. Step 3: Cross multiply
   33,121.89x = 45,694.72 × 18,778.70
4. Step 4: Simplify right side
   33,121.89x = 858,087,438.46
5. Step 5: Solve for x
   x = 858,087,438.46/33,121.89
6. Step 6: Final answer
   x = 25,906.96