Finding the Fourth Proportional to 9,520.50, 13,137.72 and 5,271.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,520.50 : 13,137.72 = 5,271.42 : x
2. Step 2: Convert to fraction form
   9,520.50/13,137.72 = 5,271.42/x
3. Step 3: Cross multiply
   9,520.50x = 13,137.72 × 5,271.42
4. Step 4: Simplify right side
   9,520.50x = 69,254,439.96
5. Step 5: Solve for x
   x = 69,254,439.96/9,520.50
6. Step 6: Final answer
   x = 7,274.24