Finding the Fourth Proportional to 3,905.69, 5,389.47 and 2,227.01

Step by Step Solution

1. Step 1: Write the proportion equation
   3,905.69 : 5,389.47 = 2,227.01 : x
2. Step 2: Convert to fraction form
   3,905.69/5,389.47 = 2,227.01/x
3. Step 3: Cross multiply
   3,905.69x = 5,389.47 × 2,227.01
4. Step 4: Simplify right side
   3,905.69x = 12,002,376.64
5. Step 5: Solve for x
   x = 12,002,376.64/3,905.69
6. Step 6: Final answer
   x = 3,073.05