Finding the Fourth Proportional to 5,031.35, 6,938.71 and 3,143.10

Step by Step Solution

1. Step 1: Write the proportion equation
   5,031.35 : 6,938.71 = 3,143.10 : x
2. Step 2: Convert to fraction form
   5,031.35/6,938.71 = 3,143.10/x
3. Step 3: Cross multiply
   5,031.35x = 6,938.71 × 3,143.10
4. Step 4: Simplify right side
   5,031.35x = 21,809,043.69
5. Step 5: Solve for x
   x = 21,809,043.69/5,031.35
6. Step 6: Final answer
   x = 4,334.63