Finding the Fourth Proportional to 25,380.28, 35,025.72 and 13,896

Step by Step Solution

1. Step 1: Write the proportion equation
   25,380.28 : 35,025.72 = 13,896 : x
2. Step 2: Convert to fraction form
   25,380.28/35,025.72 = 13,896/x
3. Step 3: Cross multiply
   25,380.28x = 35,025.72 × 13,896
4. Step 4: Simplify right side
   25,380.28x = 486,717,405.12
5. Step 5: Solve for x
   x = 486,717,405.12/25,380.28
6. Step 6: Final answer
   x = 19,176.99