Finding the Fourth Proportional to 21,145.98, 29,182.83 and 12,194.10

Step by Step Solution

1. Step 1: Write the proportion equation
   21,145.98 : 29,182.83 = 12,194.10 : x
2. Step 2: Convert to fraction form
   21,145.98/29,182.83 = 12,194.10/x
3. Step 3: Cross multiply
   21,145.98x = 29,182.83 × 12,194.10
4. Step 4: Simplify right side
   21,145.98x = 355,858,347.30
5. Step 5: Solve for x
   x = 355,858,347.30/21,145.98
6. Step 6: Final answer
   x = 16,828.65