Finding the Fourth Proportional to 9,710.16, 13,397.88 and 5,728.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,710.16 : 13,397.88 = 5,728.56 : x
2. Step 2: Convert to fraction form
   9,710.16/13,397.88 = 5,728.56/x
3. Step 3: Cross multiply
   9,710.16x = 13,397.88 × 5,728.56
4. Step 4: Simplify right side
   9,710.16x = 76,750,559.45
5. Step 5: Solve for x
   x = 76,750,559.45/9,710.16
6. Step 6: Final answer
   x = 7,904.15