Finding the Fourth Proportional to 25,258.31, 34,856.71 and 13,928.25

Step by Step Solution

1. Step 1: Write the proportion equation
   25,258.31 : 34,856.71 = 13,928.25 : x
2. Step 2: Convert to fraction form
   25,258.31/34,856.71 = 13,928.25/x
3. Step 3: Cross multiply
   25,258.31x = 34,856.71 × 13,928.25
4. Step 4: Simplify right side
   25,258.31x = 485,492,971.06
5. Step 5: Solve for x
   x = 485,492,971.06/25,258.31
6. Step 6: Final answer
   x = 19,221.12