Finding the Fourth Proportional to 3,820.28, 5,724.05 and 3,676.29

Step by Step Solution

1. Step 1: Write the proportion equation
   3,820.28 : 5,724.05 = 3,676.29 : x
2. Step 2: Convert to fraction form
   3,820.28/5,724.05 = 3,676.29/x
3. Step 3: Cross multiply
   3,820.28x = 5,724.05 × 3,676.29
4. Step 4: Simplify right side
   3,820.28x = 21,043,249.39
5. Step 5: Solve for x
   x = 21,043,249.39/3,820.28
6. Step 6: Final answer
   x = 5,508.31