Finding the Fourth Proportional to 9,315.09, 12,854.70 and 5,336.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,315.09 : 12,854.70 = 5,336.10 : x
2. Step 2: Convert to fraction form
   9,315.09/12,854.70 = 5,336.10/x
3. Step 3: Cross multiply
   9,315.09x = 12,854.70 × 5,336.10
4. Step 4: Simplify right side
   9,315.09x = 68,593,964.67
5. Step 5: Solve for x
   x = 68,593,964.67/9,315.09
6. Step 6: Final answer
   x = 7,363.75