Finding the Fourth Proportional to 9,581.72, 13,222.96 and 5,805.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,581.72 : 13,222.96 = 5,805.50 : x
2. Step 2: Convert to fraction form
   9,581.72/13,222.96 = 5,805.50/x
3. Step 3: Cross multiply
   9,581.72x = 13,222.96 × 5,805.50
4. Step 4: Simplify right side
   9,581.72x = 76,765,894.28
5. Step 5: Solve for x
   x = 76,765,894.28/9,581.72
6. Step 6: Final answer
   x = 8,011.70