Finding the Fourth Proportional to 3,981.61, 5,945.48 and 3,462.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,981.61 : 5,945.48 = 3,462.80 : x
2. Step 2: Convert to fraction form
   3,981.61/5,945.48 = 3,462.80/x
3. Step 3: Cross multiply
   3,981.61x = 5,945.48 × 3,462.80
4. Step 4: Simplify right side
   3,981.61x = 20,587,997.79
5. Step 5: Solve for x
   x = 20,587,997.79/3,981.61
6. Step 6: Final answer
   x = 5,170.78