Finding the Fourth Proportional to 25,603.76, 35,328.89 and 14,270.78

Step by Step Solution

1. Step 1: Write the proportion equation
   25,603.76 : 35,328.89 = 14,270.78 : x
2. Step 2: Convert to fraction form
   25,603.76/35,328.89 = 14,270.78/x
3. Step 3: Cross multiply
   25,603.76x = 35,328.89 × 14,270.78
4. Step 4: Simplify right side
   25,603.76x = 504,170,940.83
5. Step 5: Solve for x
   x = 504,170,940.83/25,603.76
6. Step 6: Final answer
   x = 19,691.28