Finding the Fourth Proportional to 6,388.88, 9,581.72 and 2,228.27

Step by Step Solution

1. Step 1: Write the proportion equation
   6,388.88 : 9,581.72 = 2,228.27 : x
2. Step 2: Convert to fraction form
   6,388.88/9,581.72 = 2,228.27/x
3. Step 3: Cross multiply
   6,388.88x = 9,581.72 × 2,228.27
4. Step 4: Simplify right side
   6,388.88x = 21,350,600.17
5. Step 5: Solve for x
   x = 21,350,600.17/6,388.88
6. Step 6: Final answer
   x = 3,341.84