Finding the Fourth Proportional to 3,709.27, 5,118.78 and 2,007.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,709.27 : 5,118.78 = 2,007.76 : x
2. Step 2: Convert to fraction form
   3,709.27/5,118.78 = 2,007.76/x
3. Step 3: Cross multiply
   3,709.27x = 5,118.78 × 2,007.76
4. Step 4: Simplify right side
   3,709.27x = 10,277,281.73
5. Step 5: Solve for x
   x = 10,277,281.73/3,709.27
6. Step 6: Final answer
   x = 2,770.70