Finding the Fourth Proportional to 9,564.48, 13,198.78 and 5,315.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,564.48 : 13,198.78 = 5,315.52 : x
2. Step 2: Convert to fraction form
   9,564.48/13,198.78 = 5,315.52/x
3. Step 3: Cross multiply
   9,564.48x = 13,198.78 × 5,315.52
4. Step 4: Simplify right side
   9,564.48x = 70,158,435.21
5. Step 5: Solve for x
   x = 70,158,435.21/9,564.48
6. Step 6: Final answer
   x = 7,335.31