Finding the Fourth Proportional to 9,520.37, 13,138.29 and 5,328.61

Step by Step Solution

1. Step 1: Write the proportion equation
   9,520.37 : 13,138.29 = 5,328.61 : x
2. Step 2: Convert to fraction form
   9,520.37/13,138.29 = 5,328.61/x
3. Step 3: Cross multiply
   9,520.37x = 13,138.29 × 5,328.61
4. Step 4: Simplify right side
   9,520.37x = 70,008,796.83
5. Step 5: Solve for x
   x = 70,008,796.83/9,520.37
6. Step 6: Final answer
   x = 7,353.58