Finding the Fourth Proportional to 25,164, 34,727.40 and 13,986

Step by Step Solution

1. Step 1: Write the proportion equation
   25,164 : 34,727.40 = 13,986 : x
2. Step 2: Convert to fraction form
   25,164/34,727.40 = 13,986/x
3. Step 3: Cross multiply
   25,164x = 34,727.40 × 13,986
4. Step 4: Simplify right side
   25,164x = 485,697,416.40
5. Step 5: Solve for x
   x = 485,697,416.40/25,164
6. Step 6: Final answer
   x = 19,301.28