Finding the Fourth Proportional to 3,676.42, 5,072.31 and 2,104.21

Step by Step Solution

1. Step 1: Write the proportion equation
   3,676.42 : 5,072.31 = 2,104.21 : x
2. Step 2: Convert to fraction form
   3,676.42/5,072.31 = 2,104.21/x
3. Step 3: Cross multiply
   3,676.42x = 5,072.31 × 2,104.21
4. Step 4: Simplify right side
   3,676.42x = 10,673,205.43
5. Step 5: Solve for x
   x = 10,673,205.43/3,676.42
6. Step 6: Final answer
   x = 2,903.15