Finding the Fourth Proportional to 9,581.52, 13,222.34 and 5,389.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,581.52 : 13,222.34 = 5,389.76 : x
2. Step 2: Convert to fraction form
   9,581.52/13,222.34 = 5,389.76/x
3. Step 3: Cross multiply
   9,581.52x = 13,222.34 × 5,389.76
4. Step 4: Simplify right side
   9,581.52x = 71,265,239.24
5. Step 5: Solve for x
   x = 71,265,239.24/9,581.52
6. Step 6: Final answer
   x = 7,437.78