Finding the Fourth Proportional to 6,942.72, 10,401.12 and 5,400.48

Step by Step Solution

1. Step 1: Write the proportion equation
   6,942.72 : 10,401.12 = 5,400.48 : x
2. Step 2: Convert to fraction form
   6,942.72/10,401.12 = 5,400.48/x
3. Step 3: Cross multiply
   6,942.72x = 10,401.12 × 5,400.48
4. Step 4: Simplify right side
   6,942.72x = 56,171,040.54
5. Step 5: Solve for x
   x = 56,171,040.54/6,942.72
6. Step 6: Final answer
   x = 8,090.64