Finding the Fourth Proportional to 9,315.88, 12,856.07 and 5,067.03

Step by Step Solution

1. Step 1: Write the proportion equation
   9,315.88 : 12,856.07 = 5,067.03 : x
2. Step 2: Convert to fraction form
   9,315.88/12,856.07 = 5,067.03/x
3. Step 3: Cross multiply
   9,315.88x = 12,856.07 × 5,067.03
4. Step 4: Simplify right side
   9,315.88x = 65,142,114.54
5. Step 5: Solve for x
   x = 65,142,114.54/9,315.88
6. Step 6: Final answer
   x = 6,992.59