Finding the Fourth Proportional to 3,905.89, 5,390.18 and 2,227.26

Step by Step Solution

1. Step 1: Write the proportion equation
   3,905.89 : 5,390.18 = 2,227.26 : x
2. Step 2: Convert to fraction form
   3,905.89/5,390.18 = 2,227.26/x
3. Step 3: Cross multiply
   3,905.89x = 5,390.18 × 2,227.26
4. Step 4: Simplify right side
   3,905.89x = 12,005,332.31
5. Step 5: Solve for x
   x = 12,005,332.31/3,905.89
6. Step 6: Final answer
   x = 3,073.65