Finding the Fourth Proportional to 9,520.05, 13,137.93 and 5,328.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,520.05 : 13,137.93 = 5,328.30 : x
2. Step 2: Convert to fraction form
   9,520.05/13,137.93 = 5,328.30/x
3. Step 3: Cross multiply
   9,520.05x = 13,137.93 × 5,328.30
4. Step 4: Simplify right side
   9,520.05x = 70,002,832.42
5. Step 5: Solve for x
   x = 70,002,832.42/9,520.05
6. Step 6: Final answer
   x = 7,353.20