Finding the Fourth Proportional to 25,145.82, 34,701.46 and 13,815.55

Step by Step Solution

1. Step 1: Write the proportion equation
   25,145.82 : 34,701.46 = 13,815.55 : x
2. Step 2: Convert to fraction form
   25,145.82/34,701.46 = 13,815.55/x
3. Step 3: Cross multiply
   25,145.82x = 34,701.46 × 13,815.55
4. Step 4: Simplify right side
   25,145.82x = 479,419,621.15
5. Step 5: Solve for x
   x = 479,419,621.15/25,145.82
6. Step 6: Final answer
   x = 19,065.58