Finding the Fourth Proportional to 25,145.11, 34,700.86 and 13,815.34

Step by Step Solution

1. Step 1: Write the proportion equation
   25,145.11 : 34,700.86 = 13,815.34 : x
2. Step 2: Convert to fraction form
   25,145.11/34,700.86 = 13,815.34/x
3. Step 3: Cross multiply
   25,145.11x = 34,700.86 × 13,815.34
4. Step 4: Simplify right side
   25,145.11x = 479,404,005.69
5. Step 5: Solve for x
   x = 479,404,005.69/25,145.11
6. Step 6: Final answer
   x = 19,065.50