Finding the Fourth Proportional to 9,520.10, 13,137.81 and 5,328.35

Step by Step Solution

1. Step 1: Write the proportion equation
   9,520.10 : 13,137.81 = 5,328.35 : x
2. Step 2: Convert to fraction form
   9,520.10/13,137.81 = 5,328.35/x
3. Step 3: Cross multiply
   9,520.10x = 13,137.81 × 5,328.35
4. Step 4: Simplify right side
   9,520.10x = 70,002,784.22
5. Step 5: Solve for x
   x = 70,002,784.22/9,520.10
6. Step 6: Final answer
   x = 7,353.16