Finding the Fourth Proportional to 5,383.69, 7,428.83 and 3,143.94

Step by Step Solution

1. Step 1: Write the proportion equation
   5,383.69 : 7,428.83 = 3,143.94 : x
2. Step 2: Convert to fraction form
   5,383.69/7,428.83 = 3,143.94/x
3. Step 3: Cross multiply
   5,383.69x = 7,428.83 × 3,143.94
4. Step 4: Simplify right side
   5,383.69x = 23,355,752.21
5. Step 5: Solve for x
   x = 23,355,752.21/5,383.69
6. Step 6: Final answer
   x = 4,338.24