Finding the Fourth Proportional to 3,905.72, 5,390.02 and 2,227.37

Step by Step Solution

1. Step 1: Write the proportion equation
   3,905.72 : 5,390.02 = 2,227.37 : x
2. Step 2: Convert to fraction form
   3,905.72/5,390.02 = 2,227.37/x
3. Step 3: Cross multiply
   3,905.72x = 5,390.02 × 2,227.37
4. Step 4: Simplify right side
   3,905.72x = 12,005,568.85
5. Step 5: Solve for x
   x = 12,005,568.85/3,905.72
6. Step 6: Final answer
   x = 3,073.84