Finding the Fourth Proportional to 8,383.30, 12,574.33 and 3,386.02

Step by Step Solution

1. Step 1: Write the proportion equation
   8,383.30 : 12,574.33 = 3,386.02 : x
2. Step 2: Convert to fraction form
   8,383.30/12,574.33 = 3,386.02/x
3. Step 3: Cross multiply
   8,383.30x = 12,574.33 × 3,386.02
4. Step 4: Simplify right side
   8,383.30x = 42,576,932.87
5. Step 5: Solve for x
   x = 42,576,932.87/8,383.30
6. Step 6: Final answer
   x = 5,078.78