Finding the Fourth Proportional to 9,386, 12,952.72 and 5,660.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,386 : 12,952.72 = 5,660.72 : x
2. Step 2: Convert to fraction form
   9,386/12,952.72 = 5,660.72/x
3. Step 3: Cross multiply
   9,386x = 12,952.72 × 5,660.72
4. Step 4: Simplify right side
   9,386x = 73,321,721.16
5. Step 5: Solve for x
   x = 73,321,721.16/9,386
6. Step 6: Final answer
   x = 7,811.82