Finding the Fourth Proportional to 25,469.15, 35,146.76 and 14,138.35

Step by Step Solution

1. Step 1: Write the proportion equation
   25,469.15 : 35,146.76 = 14,138.35 : x
2. Step 2: Convert to fraction form
   25,469.15/35,146.76 = 14,138.35/x
3. Step 3: Cross multiply
   25,469.15x = 35,146.76 × 14,138.35
4. Step 4: Simplify right side
   25,469.15x = 496,917,141.72
5. Step 5: Solve for x
   x = 496,917,141.72/25,469.15
6. Step 6: Final answer
   x = 19,510.55