Finding the Fourth Proportional to 4,667.31, 6,438.81 and 3,154.38

Step by Step Solution

1. Step 1: Write the proportion equation
   4,667.31 : 6,438.81 = 3,154.38 : x
2. Step 2: Convert to fraction form
   4,667.31/6,438.81 = 3,154.38/x
3. Step 3: Cross multiply
   4,667.31x = 6,438.81 × 3,154.38
4. Step 4: Simplify right side
   4,667.31x = 20,310,453.49
5. Step 5: Solve for x
   x = 20,310,453.49/4,667.31
6. Step 6: Final answer
   x = 4,351.64