Finding the Fourth Proportional to 6,919.83, 10,383.39 and 3,221.10

Step by Step Solution

1. Step 1: Write the proportion equation
   6,919.83 : 10,383.39 = 3,221.10 : x
2. Step 2: Convert to fraction form
   6,919.83/10,383.39 = 3,221.10/x
3. Step 3: Cross multiply
   6,919.83x = 10,383.39 × 3,221.10
4. Step 4: Simplify right side
   6,919.83x = 33,445,937.53
5. Step 5: Solve for x
   x = 33,445,937.53/6,919.83
6. Step 6: Final answer
   x = 4,833.35