Finding the Fourth Proportional to 3,738.72, 5,609.76 and 2,918.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,738.72 : 5,609.76 = 2,918.56 : x
2. Step 2: Convert to fraction form
   3,738.72/5,609.76 = 2,918.56/x
3. Step 3: Cross multiply
   3,738.72x = 5,609.76 × 2,918.56
4. Step 4: Simplify right side
   3,738.72x = 16,372,421.15
5. Step 5: Solve for x
   x = 16,372,421.15/3,738.72
6. Step 6: Final answer
   x = 4,379.15