Finding the Fourth Proportional to 12,075.45, 16,644.86 and 9,519.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,075.45 : 16,644.86 = 9,519.04 : x
2. Step 2: Convert to fraction form
   12,075.45/16,644.86 = 9,519.04/x
3. Step 3: Cross multiply
   12,075.45x = 16,644.86 × 9,519.04
4. Step 4: Simplify right side
   12,075.45x = 158,443,004.91
5. Step 5: Solve for x
   x = 158,443,004.91/12,075.45
6. Step 6: Final answer
   x = 13,121.09