Finding the Fourth Proportional to 5,381.71, 7,427.37 and 3,144.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,381.71 : 7,427.37 = 3,144.31 : x
2. Step 2: Convert to fraction form
   5,381.71/7,427.37 = 3,144.31/x
3. Step 3: Cross multiply
   5,381.71x = 7,427.37 × 3,144.31
4. Step 4: Simplify right side
   5,381.71x = 23,353,953.76
5. Step 5: Solve for x
   x = 23,353,953.76/5,381.71
6. Step 6: Final answer
   x = 4,339.50