Finding the Fourth Proportional to 9,315.12, 12,851.73 and 5,281.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,315.12 : 12,851.73 = 5,281.52 : x
2. Step 2: Convert to fraction form
   9,315.12/12,851.73 = 5,281.52/x
3. Step 3: Cross multiply
   9,315.12x = 12,851.73 × 5,281.52
4. Step 4: Simplify right side
   9,315.12x = 67,876,604.77
5. Step 5: Solve for x
   x = 67,876,604.77/9,315.12
6. Step 6: Final answer
   x = 7,286.71