Finding the Fourth Proportional to 16,377.92, 24,572.64 and 7,142.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,377.92 : 24,572.64 = 7,142.72 : x
2. Step 2: Convert to fraction form
   16,377.92/24,572.64 = 7,142.72/x
3. Step 3: Cross multiply
   16,377.92x = 24,572.64 × 7,142.72
4. Step 4: Simplify right side
   16,377.92x = 175,515,487.18
5. Step 5: Solve for x
   x = 175,515,487.18/16,377.92
6. Step 6: Final answer
   x = 10,716.59