Finding the Fourth Proportional to 25,471.62, 35,078.18 and 18,386.82

Step by Step Solution

1. Step 1: Write the proportion equation
   25,471.62 : 35,078.18 = 18,386.82 : x
2. Step 2: Convert to fraction form
   25,471.62/35,078.18 = 18,386.82/x
3. Step 3: Cross multiply
   25,471.62x = 35,078.18 × 18,386.82
4. Step 4: Simplify right side
   25,471.62x = 644,976,089.65
5. Step 5: Solve for x
   x = 644,976,089.65/25,471.62
6. Step 6: Final answer
   x = 25,321.36