Finding the Fourth Proportional to 5,383.72, 7,429.46 and 3,145.94

Step by Step Solution

1. Step 1: Write the proportion equation
   5,383.72 : 7,429.46 = 3,145.94 : x
2. Step 2: Convert to fraction form
   5,383.72/7,429.46 = 3,145.94/x
3. Step 3: Cross multiply
   5,383.72x = 7,429.46 × 3,145.94
4. Step 4: Simplify right side
   5,383.72x = 23,372,606.11
5. Step 5: Solve for x
   x = 23,372,606.11/5,383.72
6. Step 6: Final answer
   x = 4,341.35