Finding the Fourth Proportional to 25,317.06, 34,939.59 and 13,987.55

Step by Step Solution

1. Step 1: Write the proportion equation
   25,317.06 : 34,939.59 = 13,987.55 : x
2. Step 2: Convert to fraction form
   25,317.06/34,939.59 = 13,987.55/x
3. Step 3: Cross multiply
   25,317.06x = 34,939.59 × 13,987.55
4. Step 4: Simplify right side
   25,317.06x = 488,719,262.10
5. Step 5: Solve for x
   x = 488,719,262.10/25,317.06
6. Step 6: Final answer
   x = 19,303.95