Finding the Fourth Proportional to 25,719.65, 35,489.67 and 14,961.59

Step by Step Solution

1. Step 1: Write the proportion equation
   25,719.65 : 35,489.67 = 14,961.59 : x
2. Step 2: Convert to fraction form
   25,719.65/35,489.67 = 14,961.59/x
3. Step 3: Cross multiply
   25,719.65x = 35,489.67 × 14,961.59
4. Step 4: Simplify right side
   25,719.65x = 530,981,891.78
5. Step 5: Solve for x
   x = 530,981,891.78/25,719.65
6. Step 6: Final answer
   x = 20,644.99