Finding the Fourth Proportional to 9,825.78, 14,671.83 and 9,270.79

Step by Step Solution

1. Step 1: Write the proportion equation
   9,825.78 : 14,671.83 = 9,270.79 : x
2. Step 2: Convert to fraction form
   9,825.78/14,671.83 = 9,270.79/x
3. Step 3: Cross multiply
   9,825.78x = 14,671.83 × 9,270.79
4. Step 4: Simplify right side
   9,825.78x = 136,019,454.85
5. Step 5: Solve for x
   x = 136,019,454.85/9,825.78
6. Step 6: Final answer
   x = 13,843.12