Finding the Fourth Proportional to 25,145.61, 34,701.55 and 13,815.84

Step by Step Solution

1. Step 1: Write the proportion equation
   25,145.61 : 34,701.55 = 13,815.84 : x
2. Step 2: Convert to fraction form
   25,145.61/34,701.55 = 13,815.84/x
3. Step 3: Cross multiply
   25,145.61x = 34,701.55 × 13,815.84
4. Step 4: Simplify right side
   25,145.61x = 479,431,062.55
5. Step 5: Solve for x
   x = 479,431,062.55/25,145.61
6. Step 6: Final answer
   x = 19,066.19