Finding the Fourth Proportional to 3,406.83, 5,103.33 and 3,123.33

Step by Step Solution

1. Step 1: Write the proportion equation
   3,406.83 : 5,103.33 = 3,123.33 : x
2. Step 2: Convert to fraction form
   3,406.83/5,103.33 = 3,123.33/x
3. Step 3: Cross multiply
   3,406.83x = 5,103.33 × 3,123.33
4. Step 4: Simplify right side
   3,406.83x = 15,939,383.69
5. Step 5: Solve for x
   x = 15,939,383.69/3,406.83
6. Step 6: Final answer
   x = 4,678.66