Finding the Fourth Proportional to 16,353.76, 24,540.72 and 7,120.48

Step by Step Solution

1. Step 1: Write the proportion equation
   16,353.76 : 24,540.72 = 7,120.48 : x
2. Step 2: Convert to fraction form
   16,353.76/24,540.72 = 7,120.48/x
3. Step 3: Cross multiply
   16,353.76x = 24,540.72 × 7,120.48
4. Step 4: Simplify right side
   16,353.76x = 174,741,705.95
5. Step 5: Solve for x
   x = 174,741,705.95/16,353.76
6. Step 6: Final answer
   x = 10,685.11