Finding the Fourth Proportional to 25,189.75, 34,761.85 and 13,859

Step by Step Solution

1. Step 1: Write the proportion equation
   25,189.75 : 34,761.85 = 13,859 : x
2. Step 2: Convert to fraction form
   25,189.75/34,761.85 = 13,859/x
3. Step 3: Cross multiply
   25,189.75x = 34,761.85 × 13,859
4. Step 4: Simplify right side
   25,189.75x = 481,764,479.15
5. Step 5: Solve for x
   x = 481,764,479.15/25,189.75
6. Step 6: Final answer
   x = 19,125.42