Finding the Fourth Proportional to 3,918.76, 5,401.16 and 3,734.22

Step by Step Solution

1. Step 1: Write the proportion equation
   3,918.76 : 5,401.16 = 3,734.22 : x
2. Step 2: Convert to fraction form
   3,918.76/5,401.16 = 3,734.22/x
3. Step 3: Cross multiply
   3,918.76x = 5,401.16 × 3,734.22
4. Step 4: Simplify right side
   3,918.76x = 20,169,074.02
5. Step 5: Solve for x
   x = 20,169,074.02/3,918.76
6. Step 6: Final answer
   x = 5,146.80