Finding the Fourth Proportional to 9,665.64, 14,498.54 and 3,425.69

Step by Step Solution

1. Step 1: Write the proportion equation
   9,665.64 : 14,498.54 = 3,425.69 : x
2. Step 2: Convert to fraction form
   9,665.64/14,498.54 = 3,425.69/x
3. Step 3: Cross multiply
   9,665.64x = 14,498.54 × 3,425.69
4. Step 4: Simplify right side
   9,665.64x = 49,667,413.87
5. Step 5: Solve for x
   x = 49,667,413.87/9,665.64
6. Step 6: Final answer
   x = 5,138.55