Finding the Fourth Proportional to 9,786.96, 13,506.04 and 5,310.71

Step by Step Solution

1. Step 1: Write the proportion equation
   9,786.96 : 13,506.04 = 5,310.71 : x
2. Step 2: Convert to fraction form
   9,786.96/13,506.04 = 5,310.71/x
3. Step 3: Cross multiply
   9,786.96x = 13,506.04 × 5,310.71
4. Step 4: Simplify right side
   9,786.96x = 71,726,620.94
5. Step 5: Solve for x
   x = 71,726,620.94/9,786.96
6. Step 6: Final answer
   x = 7,328.80