Finding the Fourth Proportional to 3,868.72, 5,813.79 and 3,774.94

Step by Step Solution

1. Step 1: Write the proportion equation
   3,868.72 : 5,813.79 = 3,774.94 : x
2. Step 2: Convert to fraction form
   3,868.72/5,813.79 = 3,774.94/x
3. Step 3: Cross multiply
   3,868.72x = 5,813.79 × 3,774.94
4. Step 4: Simplify right side
   3,868.72x = 21,946,708.42
5. Step 5: Solve for x
   x = 21,946,708.42/3,868.72
6. Step 6: Final answer
   x = 5,672.86