Finding the Fourth Proportional to 9,531.20, 13,152.71 and 5,282.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,531.20 : 13,152.71 = 5,282.15 : x
2. Step 2: Convert to fraction form
   9,531.20/13,152.71 = 5,282.15/x
3. Step 3: Cross multiply
   9,531.20x = 13,152.71 × 5,282.15
4. Step 4: Simplify right side
   9,531.20x = 69,474,593.60
5. Step 5: Solve for x
   x = 69,474,593.60/9,531.20
6. Step 6: Final answer
   x = 7,289.17