Finding the Fourth Proportional to 25,401.42, 35,021.43 and 19,726.56

Step by Step Solution

1. Step 1: Write the proportion equation
   25,401.42 : 35,021.43 = 19,726.56 : x
2. Step 2: Convert to fraction form
   25,401.42/35,021.43 = 19,726.56/x
3. Step 3: Cross multiply
   25,401.42x = 35,021.43 × 19,726.56
4. Step 4: Simplify right side
   25,401.42x = 690,852,340.18
5. Step 5: Solve for x
   x = 690,852,340.18/25,401.42
6. Step 6: Final answer
   x = 27,197.39