Finding the Fourth Proportional to 10,874.17, 16,317.73 and 3,949.21

Step by Step Solution

1. Step 1: Write the proportion equation
   10,874.17 : 16,317.73 = 3,949.21 : x
2. Step 2: Convert to fraction form
   10,874.17/16,317.73 = 3,949.21/x
3. Step 3: Cross multiply
   10,874.17x = 16,317.73 × 3,949.21
4. Step 4: Simplify right side
   10,874.17x = 64,442,142.49
5. Step 5: Solve for x
   x = 64,442,142.49/10,874.17
6. Step 6: Final answer
   x = 5,926.17