Finding the Fourth Proportional to 25,726.39, 35,491.15 and 15,111.24

Step by Step Solution

1. Step 1: Write the proportion equation
   25,726.39 : 35,491.15 = 15,111.24 : x
2. Step 2: Convert to fraction form
   25,726.39/35,491.15 = 15,111.24/x
3. Step 3: Cross multiply
   25,726.39x = 35,491.15 × 15,111.24
4. Step 4: Simplify right side
   25,726.39x = 536,315,304.42
5. Step 5: Solve for x
   x = 536,315,304.42/25,726.39
6. Step 6: Final answer
   x = 20,846.89