Finding the Fourth Proportional to 3,916.82, 5,406.23 and 2,423.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,916.82 : 5,406.23 = 2,423.86 : x
2. Step 2: Convert to fraction form
   3,916.82/5,406.23 = 2,423.86/x
3. Step 3: Cross multiply
   3,916.82x = 5,406.23 × 2,423.86
4. Step 4: Simplify right side
   3,916.82x = 13,103,923.56
5. Step 5: Solve for x
   x = 13,103,923.56/3,916.82
6. Step 6: Final answer
   x = 3,345.55