Finding the Fourth Proportional to 3,886.54, 5,825.29 and 2,221.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,886.54 : 5,825.29 = 2,221.83 : x
2. Step 2: Convert to fraction form
   3,886.54/5,825.29 = 2,221.83/x
3. Step 3: Cross multiply
   3,886.54x = 5,825.29 × 2,221.83
4. Step 4: Simplify right side
   3,886.54x = 12,942,802.69
5. Step 5: Solve for x
   x = 12,942,802.69/3,886.54
6. Step 6: Final answer
   x = 3,330.16