Finding the Fourth Proportional to 3,905.71, 5,389.83 and 2,227.07

Step by Step Solution

1. Step 1: Write the proportion equation
   3,905.71 : 5,389.83 = 2,227.07 : x
2. Step 2: Convert to fraction form
   3,905.71/5,389.83 = 2,227.07/x
3. Step 3: Cross multiply
   3,905.71x = 5,389.83 × 2,227.07
4. Step 4: Simplify right side
   3,905.71x = 12,003,528.70
5. Step 5: Solve for x
   x = 12,003,528.70/3,905.71
6. Step 6: Final answer
   x = 3,073.33