Finding the Fourth Proportional to 5,139.48, 7,701.14 and 3,972.34

Step by Step Solution

1. Step 1: Write the proportion equation
   5,139.48 : 7,701.14 = 3,972.34 : x
2. Step 2: Convert to fraction form
   5,139.48/7,701.14 = 3,972.34/x
3. Step 3: Cross multiply
   5,139.48x = 7,701.14 × 3,972.34
4. Step 4: Simplify right side
   5,139.48x = 30,591,527.37
5. Step 5: Solve for x
   x = 30,591,527.37/5,139.48
6. Step 6: Final answer
   x = 5,952.26