Finding the Fourth Proportional to 9,581.97, 13,224.96 and 5,390.22

Step by Step Solution

1. Step 1: Write the proportion equation
   9,581.97 : 13,224.96 = 5,390.22 : x
2. Step 2: Convert to fraction form
   9,581.97/13,224.96 = 5,390.22/x
3. Step 3: Cross multiply
   9,581.97x = 13,224.96 × 5,390.22
4. Step 4: Simplify right side
   9,581.97x = 71,285,443.89
5. Step 5: Solve for x
   x = 71,285,443.89/9,581.97
6. Step 6: Final answer
   x = 7,439.54