Finding the Fourth Proportional to 9,506.25, 13,118.67 and 5,315.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,506.25 : 13,118.67 = 5,315.31 : x
2. Step 2: Convert to fraction form
   9,506.25/13,118.67 = 5,315.31/x
3. Step 3: Cross multiply
   9,506.25x = 13,118.67 × 5,315.31
4. Step 4: Simplify right side
   9,506.25x = 69,729,797.84
5. Step 5: Solve for x
   x = 69,729,797.84/9,506.25
6. Step 6: Final answer
   x = 7,335.15