Finding the Fourth Proportional to 9,520.48, 13,137.90 and 5,328.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,520.48 : 13,137.90 = 5,328.52 : x
2. Step 2: Convert to fraction form
   9,520.48/13,137.90 = 5,328.52/x
3. Step 3: Cross multiply
   9,520.48x = 13,137.90 × 5,328.52
4. Step 4: Simplify right side
   9,520.48x = 70,005,562.91
5. Step 5: Solve for x
   x = 70,005,562.91/9,520.48
6. Step 6: Final answer
   x = 7,353.15