Finding the Fourth Proportional to 19,644.72, 27,109.34 and 10,692.42

Step by Step Solution

1. Step 1: Write the proportion equation
   19,644.72 : 27,109.34 = 10,692.42 : x
2. Step 2: Convert to fraction form
   19,644.72/27,109.34 = 10,692.42/x
3. Step 3: Cross multiply
   19,644.72x = 27,109.34 × 10,692.42
4. Step 4: Simplify right side
   19,644.72x = 289,864,395.74
5. Step 5: Solve for x
   x = 289,864,395.74/19,644.72
6. Step 6: Final answer
   x = 14,755.33