Finding the Fourth Proportional to 3,946.86, 5,921.55 and 3,336.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,946.86 : 5,921.55 = 3,336.30 : x
2. Step 2: Convert to fraction form
   3,946.86/5,921.55 = 3,336.30/x
3. Step 3: Cross multiply
   3,946.86x = 5,921.55 × 3,336.30
4. Step 4: Simplify right side
   3,946.86x = 19,756,067.27
5. Step 5: Solve for x
   x = 19,756,067.27/3,946.86
6. Step 6: Final answer
   x = 5,005.52