Finding the Fourth Proportional to 6,872.10, 9,483.46 and 3,728.28

Step by Step Solution

1. Step 1: Write the proportion equation
   6,872.10 : 9,483.46 = 3,728.28 : x
2. Step 2: Convert to fraction form
   6,872.10/9,483.46 = 3,728.28/x
3. Step 3: Cross multiply
   6,872.10x = 9,483.46 × 3,728.28
4. Step 4: Simplify right side
   6,872.10x = 35,356,994.25
5. Step 5: Solve for x
   x = 35,356,994.25/6,872.10
6. Step 6: Final answer
   x = 5,145.01