Finding the Fourth Proportional to 9,557.92, 13,190.56 and 5,309.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,557.92 : 13,190.56 = 5,309.20 : x
2. Step 2: Convert to fraction form
   9,557.92/13,190.56 = 5,309.20/x
3. Step 3: Cross multiply
   9,557.92x = 13,190.56 × 5,309.20
4. Step 4: Simplify right side
   9,557.92x = 70,031,321.15
5. Step 5: Solve for x
   x = 70,031,321.15/9,557.92
6. Step 6: Final answer
   x = 7,327.05