Finding the Fourth Proportional to 16,404.99, 24,611.40 and 5,311.69

Step by Step Solution

1. Step 1: Write the proportion equation
   16,404.99 : 24,611.40 = 5,311.69 : x
2. Step 2: Convert to fraction form
   16,404.99/24,611.40 = 5,311.69/x
3. Step 3: Cross multiply
   16,404.99x = 24,611.40 × 5,311.69
4. Step 4: Simplify right side
   16,404.99x = 130,728,127.27
5. Step 5: Solve for x
   x = 130,728,127.27/16,404.99
6. Step 6: Final answer
   x = 7,968.80