Finding the Fourth Proportional to 25,250.43, 34,845.59 and 13,920.12

Step by Step Solution

1. Step 1: Write the proportion equation
   25,250.43 : 34,845.59 = 13,920.12 : x
2. Step 2: Convert to fraction form
   25,250.43/34,845.59 = 13,920.12/x
3. Step 3: Cross multiply
   25,250.43x = 34,845.59 × 13,920.12
4. Step 4: Simplify right side
   25,250.43x = 485,054,724.67
5. Step 5: Solve for x
   x = 485,054,724.67/25,250.43
6. Step 6: Final answer
   x = 19,209.76