Finding the Fourth Proportional to 9,639.56, 13,300.34 and 5,447.24

Step by Step Solution

1. Step 1: Write the proportion equation
   9,639.56 : 13,300.34 = 5,447.24 : x
2. Step 2: Convert to fraction form
   9,639.56/13,300.34 = 5,447.24/x
3. Step 3: Cross multiply
   9,639.56x = 13,300.34 × 5,447.24
4. Step 4: Simplify right side
   9,639.56x = 72,450,144.06
5. Step 5: Solve for x
   x = 72,450,144.06/9,639.56
6. Step 6: Final answer
   x = 7,515.92