Finding the Fourth Proportional to 9,315.40, 12,851.61 and 5,334.38

Step by Step Solution

1. Step 1: Write the proportion equation
   9,315.40 : 12,851.61 = 5,334.38 : x
2. Step 2: Convert to fraction form
   9,315.40/12,851.61 = 5,334.38/x
3. Step 3: Cross multiply
   9,315.40x = 12,851.61 × 5,334.38
4. Step 4: Simplify right side
   9,315.40x = 68,555,371.35
5. Step 5: Solve for x
   x = 68,555,371.35/9,315.40
6. Step 6: Final answer
   x = 7,359.36