Finding the Fourth Proportional to 9,399.80, 12,958.56 and 6,563.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,399.80 : 12,958.56 = 6,563.12 : x
2. Step 2: Convert to fraction form
   9,399.80/12,958.56 = 6,563.12/x
3. Step 3: Cross multiply
   9,399.80x = 12,958.56 × 6,563.12
4. Step 4: Simplify right side
   9,399.80x = 85,048,584.31
5. Step 5: Solve for x
   x = 85,048,584.31/9,399.80
6. Step 6: Final answer
   x = 9,047.91