Finding the Fourth Proportional to 3,914.82, 5,401.53 and 2,865.06

Step by Step Solution

1. Step 1: Write the proportion equation
   3,914.82 : 5,401.53 = 2,865.06 : x
2. Step 2: Convert to fraction form
   3,914.82/5,401.53 = 2,865.06/x
3. Step 3: Cross multiply
   3,914.82x = 5,401.53 × 2,865.06
4. Step 4: Simplify right side
   3,914.82x = 15,475,707.54
5. Step 5: Solve for x
   x = 15,475,707.54/3,914.82
6. Step 6: Final answer
   x = 3,953.11