Finding the Fourth Proportional to 9,579.47, 13,215.91 and 7,067.60

Step by Step Solution

1. Step 1: Write the proportion equation
   9,579.47 : 13,215.91 = 7,067.60 : x
2. Step 2: Convert to fraction form
   9,579.47/13,215.91 = 7,067.60/x
3. Step 3: Cross multiply
   9,579.47x = 13,215.91 × 7,067.60
4. Step 4: Simplify right side
   9,579.47x = 93,404,818.92
5. Step 5: Solve for x
   x = 93,404,818.92/9,579.47
6. Step 6: Final answer
   x = 9,750.53