Finding the Fourth Proportional to 9,362.56, 12,919.92 and 5,170.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,362.56 : 12,919.92 = 5,170.72 : x
2. Step 2: Convert to fraction form
   9,362.56/12,919.92 = 5,170.72/x
3. Step 3: Cross multiply
   9,362.56x = 12,919.92 × 5,170.72
4. Step 4: Simplify right side
   9,362.56x = 66,805,288.74
5. Step 5: Solve for x
   x = 66,805,288.74/9,362.56
6. Step 6: Final answer
   x = 7,135.37