Finding the Fourth Proportional to 3,868.47, 5,813.42 and 3,774.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,868.47 : 5,813.42 = 3,774.69 : x
2. Step 2: Convert to fraction form
   3,868.47/5,813.42 = 3,774.69/x
3. Step 3: Cross multiply
   3,868.47x = 5,813.42 × 3,774.69
4. Step 4: Simplify right side
   3,868.47x = 21,943,839.47
5. Step 5: Solve for x
   x = 21,943,839.47/3,868.47
6. Step 6: Final answer
   x = 5,672.49