Finding the Fourth Proportional to 16,499.16, 24,742.92 and 7,138.80

Step by Step Solution

1. Step 1: Write the proportion equation
   16,499.16 : 24,742.92 = 7,138.80 : x
2. Step 2: Convert to fraction form
   16,499.16/24,742.92 = 7,138.80/x
3. Step 3: Cross multiply
   16,499.16x = 24,742.92 × 7,138.80
4. Step 4: Simplify right side
   16,499.16x = 176,634,757.30
5. Step 5: Solve for x
   x = 176,634,757.30/16,499.16
6. Step 6: Final answer
   x = 10,705.68