Finding the Fourth Proportional to 25,238.60, 34,830.78 and 13,908.06

Step by Step Solution

1. Step 1: Write the proportion equation
   25,238.60 : 34,830.78 = 13,908.06 : x
2. Step 2: Convert to fraction form
   25,238.60/34,830.78 = 13,908.06/x
3. Step 3: Cross multiply
   25,238.60x = 34,830.78 × 13,908.06
4. Step 4: Simplify right side
   25,238.60x = 484,428,578.09
5. Step 5: Solve for x
   x = 484,428,578.09/25,238.60
6. Step 6: Final answer
   x = 19,193.96