Finding the Fourth Proportional to 9,647.43, 13,295.69 and 7,958.58

Step by Step Solution

1. Step 1: Write the proportion equation
   9,647.43 : 13,295.69 = 7,958.58 : x
2. Step 2: Convert to fraction form
   9,647.43/13,295.69 = 7,958.58/x
3. Step 3: Cross multiply
   9,647.43x = 13,295.69 × 7,958.58
4. Step 4: Simplify right side
   9,647.43x = 105,814,812.52
5. Step 5: Solve for x
   x = 105,814,812.52/9,647.43
6. Step 6: Final answer
   x = 10,968.19