Finding the Fourth Proportional to 25,208.69, 34,788.83 and 13,878.74

Step by Step Solution

1. Step 1: Write the proportion equation
   25,208.69 : 34,788.83 = 13,878.74 : x
2. Step 2: Convert to fraction form
   25,208.69/34,788.83 = 13,878.74/x
3. Step 3: Cross multiply
   25,208.69x = 34,788.83 × 13,878.74
4. Step 4: Simplify right side
   25,208.69x = 482,825,144.05
5. Step 5: Solve for x
   x = 482,825,144.05/25,208.69
6. Step 6: Final answer
   x = 19,153.13