Finding the Fourth Proportional to 5,673.39, 7,828.56 and 3,578.73

Step by Step Solution

1. Step 1: Write the proportion equation
   5,673.39 : 7,828.56 = 3,578.73 : x
2. Step 2: Convert to fraction form
   5,673.39/7,828.56 = 3,578.73/x
3. Step 3: Cross multiply
   5,673.39x = 7,828.56 × 3,578.73
4. Step 4: Simplify right side
   5,673.39x = 28,016,302.53
5. Step 5: Solve for x
   x = 28,016,302.53/5,673.39
6. Step 6: Final answer
   x = 4,938.19