Finding the Fourth Proportional to 12,765.38, 19,123.11 and 8,369.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,765.38 : 19,123.11 = 8,369.42 : x
2. Step 2: Convert to fraction form
   12,765.38/19,123.11 = 8,369.42/x
3. Step 3: Cross multiply
   12,765.38x = 19,123.11 × 8,369.42
4. Step 4: Simplify right side
   12,765.38x = 160,049,339.30
5. Step 5: Solve for x
   x = 160,049,339.30/12,765.38
6. Step 6: Final answer
   x = 12,537.77