Finding the Fourth Proportional to 16,405.02, 24,611.43 and 5,311.71

Step by Step Solution

1. Step 1: Write the proportion equation
   16,405.02 : 24,611.43 = 5,311.71 : x
2. Step 2: Convert to fraction form
   16,405.02/24,611.43 = 5,311.71/x
3. Step 3: Cross multiply
   16,405.02x = 24,611.43 × 5,311.71
4. Step 4: Simplify right side
   16,405.02x = 130,728,655.79
5. Step 5: Solve for x
   x = 130,728,655.79/16,405.02
6. Step 6: Final answer
   x = 7,968.82