Finding the Fourth Proportional to 7,178.25, 10,756.43 and 3,278.10

Step by Step Solution

1. Step 1: Write the proportion equation
   7,178.25 : 10,756.43 = 3,278.10 : x
2. Step 2: Convert to fraction form
   7,178.25/10,756.43 = 3,278.10/x
3. Step 3: Cross multiply
   7,178.25x = 10,756.43 × 3,278.10
4. Step 4: Simplify right side
   7,178.25x = 35,260,689.42
5. Step 5: Solve for x
   x = 35,260,689.42/7,178.25
6. Step 6: Final answer
   x = 4,912.15