Finding the Fourth Proportional to 3,904.81, 5,389.77 and 2,227.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,904.81 : 5,389.77 = 2,227.12 : x
2. Step 2: Convert to fraction form
   3,904.81/5,389.77 = 2,227.12/x
3. Step 3: Cross multiply
   3,904.81x = 5,389.77 × 2,227.12
4. Step 4: Simplify right side
   3,904.81x = 12,003,664.56
5. Step 5: Solve for x
   x = 12,003,664.56/3,904.81
6. Step 6: Final answer
   x = 3,074.07