Finding the Fourth Proportional to 3,916, 5,404.72 and 2,260.96

Step by Step Solution

1. Step 1: Write the proportion equation
   3,916 : 5,404.72 = 2,260.96 : x
2. Step 2: Convert to fraction form
   3,916/5,404.72 = 2,260.96/x
3. Step 3: Cross multiply
   3,916x = 5,404.72 × 2,260.96
4. Step 4: Simplify right side
   3,916x = 12,219,855.73
5. Step 5: Solve for x
   x = 12,219,855.73/3,916
6. Step 6: Final answer
   x = 3,120.49