Finding the Fourth Proportional to 9,581.43, 13,218.93 and 5,601.99

Step by Step Solution

1. Step 1: Write the proportion equation
   9,581.43 : 13,218.93 = 5,601.99 : x
2. Step 2: Convert to fraction form
   9,581.43/13,218.93 = 5,601.99/x
3. Step 3: Cross multiply
   9,581.43x = 13,218.93 × 5,601.99
4. Step 4: Simplify right side
   9,581.43x = 74,052,313.67
5. Step 5: Solve for x
   x = 74,052,313.67/9,581.43
6. Step 6: Final answer
   x = 7,728.73