Finding the Fourth Proportional to 9,571.50, 13,208.54 and 5,379.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,571.50 : 13,208.54 = 5,379.76 : x
2. Step 2: Convert to fraction form
   9,571.50/13,208.54 = 5,379.76/x
3. Step 3: Cross multiply
   9,571.50x = 13,208.54 × 5,379.76
4. Step 4: Simplify right side
   9,571.50x = 71,058,775.15
5. Step 5: Solve for x
   x = 71,058,775.15/9,571.50
6. Step 6: Final answer
   x = 7,424.00