Finding the Fourth Proportional to 25,279.78, 34,886.06 and 13,949.27

Step by Step Solution

1. Step 1: Write the proportion equation
   25,279.78 : 34,886.06 = 13,949.27 : x
2. Step 2: Convert to fraction form
   25,279.78/34,886.06 = 13,949.27/x
3. Step 3: Cross multiply
   25,279.78x = 34,886.06 × 13,949.27
4. Step 4: Simplify right side
   25,279.78x = 486,635,131.22
5. Step 5: Solve for x
   x = 486,635,131.22/25,279.78
6. Step 6: Final answer
   x = 19,249.97