Finding the Fourth Proportional to 14,103.12, 21,153.89 and 5,782.80

Step by Step Solution

1. Step 1: Write the proportion equation
   14,103.12 : 21,153.89 = 5,782.80 : x
2. Step 2: Convert to fraction form
   14,103.12/21,153.89 = 5,782.80/x
3. Step 3: Cross multiply
   14,103.12x = 21,153.89 × 5,782.80
4. Step 4: Simplify right side
   14,103.12x = 122,328,729.55
5. Step 5: Solve for x
   x = 122,328,729.55/14,103.12
6. Step 6: Final answer
   x = 8,673.88