Finding the Fourth Proportional to 12,774.42, 19,138.59 and 10,692.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,774.42 : 19,138.59 = 10,692.18 : x
2. Step 2: Convert to fraction form
   12,774.42/19,138.59 = 10,692.18/x
3. Step 3: Cross multiply
   12,774.42x = 19,138.59 × 10,692.18
4. Step 4: Simplify right side
   12,774.42x = 204,633,249.23
5. Step 5: Solve for x
   x = 204,633,249.23/12,774.42
6. Step 6: Final answer
   x = 16,018.99