Finding the Fourth Proportional to 25,128.72, 34,677 and 13,950

Step by Step Solution

1. Step 1: Write the proportion equation
   25,128.72 : 34,677 = 13,950 : x
2. Step 2: Convert to fraction form
   25,128.72/34,677 = 13,950/x
3. Step 3: Cross multiply
   25,128.72x = 34,677 × 13,950
4. Step 4: Simplify right side
   25,128.72x = 483,744,150
5. Step 5: Solve for x
   x = 483,744,150/25,128.72
6. Step 6: Final answer
   x = 19,250.65