Finding the Fourth Proportional to 3,916.71, 5,401.92 and 3,443.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,916.71 : 5,401.92 = 3,443.60 : x
2. Step 2: Convert to fraction form
   3,916.71/5,401.92 = 3,443.60/x
3. Step 3: Cross multiply
   3,916.71x = 5,401.92 × 3,443.60
4. Step 4: Simplify right side
   3,916.71x = 18,602,051.71
5. Step 5: Solve for x
   x = 18,602,051.71/3,916.71
6. Step 6: Final answer
   x = 4,749.41