Finding the Fourth Proportional to 3,843.96, 5,308.56 and 3,311.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,843.96 : 5,308.56 = 3,311.76 : x
2. Step 2: Convert to fraction form
   3,843.96/5,308.56 = 3,311.76/x
3. Step 3: Cross multiply
   3,843.96x = 5,308.56 × 3,311.76
4. Step 4: Simplify right side
   3,843.96x = 17,580,676.67
5. Step 5: Solve for x
   x = 17,580,676.67/3,843.96
6. Step 6: Final answer
   x = 4,573.58