Finding the Fourth Proportional to 7,047.20, 9,725.31 and 3,860.67

Step by Step Solution

1. Step 1: Write the proportion equation
   7,047.20 : 9,725.31 = 3,860.67 : x
2. Step 2: Convert to fraction form
   7,047.20/9,725.31 = 3,860.67/x
3. Step 3: Cross multiply
   7,047.20x = 9,725.31 × 3,860.67
4. Step 4: Simplify right side
   7,047.20x = 37,546,212.56
5. Step 5: Solve for x
   x = 37,546,212.56/7,047.20
6. Step 6: Final answer
   x = 5,327.82