Finding the Fourth Proportional to 25,228.73, 34,789.25 and 18,845.31

Step by Step Solution

1. Step 1: Write the proportion equation
   25,228.73 : 34,789.25 = 18,845.31 : x
2. Step 2: Convert to fraction form
   25,228.73/34,789.25 = 18,845.31/x
3. Step 3: Cross multiply
   25,228.73x = 34,789.25 × 18,845.31
4. Step 4: Simplify right side
   25,228.73x = 655,614,106.69
5. Step 5: Solve for x
   x = 655,614,106.69/25,228.73
6. Step 6: Final answer
   x = 25,986.81