Finding the Fourth Proportional to 9,760.57, 13,469.70 and 5,284.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,760.57 : 13,469.70 = 5,284.42 : x
2. Step 2: Convert to fraction form
   9,760.57/13,469.70 = 5,284.42/x
3. Step 3: Cross multiply
   9,760.57x = 13,469.70 × 5,284.42
4. Step 4: Simplify right side
   9,760.57x = 71,179,538.86
5. Step 5: Solve for x
   x = 71,179,538.86/9,760.57
6. Step 6: Final answer
   x = 7,292.56