Finding the Fourth Proportional to 6,760.05, 10,143.89 and 3,639.99

Step by Step Solution

1. Step 1: Write the proportion equation
   6,760.05 : 10,143.89 = 3,639.99 : x
2. Step 2: Convert to fraction form
   6,760.05/10,143.89 = 3,639.99/x
3. Step 3: Cross multiply
   6,760.05x = 10,143.89 × 3,639.99
4. Step 4: Simplify right side
   6,760.05x = 36,923,648.67
5. Step 5: Solve for x
   x = 36,923,648.67/6,760.05
6. Step 6: Final answer
   x = 5,462.04