Finding the Fourth Proportional to 3,878.40, 5,791.33 and 3,047.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,878.40 : 5,791.33 = 3,047.34 : x
2. Step 2: Convert to fraction form
   3,878.40/5,791.33 = 3,047.34/x
3. Step 3: Cross multiply
   3,878.40x = 5,791.33 × 3,047.34
4. Step 4: Simplify right side
   3,878.40x = 17,648,151.56
5. Step 5: Solve for x
   x = 17,648,151.56/3,878.40
6. Step 6: Final answer
   x = 4,550.37