Finding the Fourth Proportional to 12,766.38, 19,124.61 and 8,370.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,766.38 : 19,124.61 = 8,370.42 : x
2. Step 2: Convert to fraction form
   12,766.38/19,124.61 = 8,370.42/x
3. Step 3: Cross multiply
   12,766.38x = 19,124.61 × 8,370.42
4. Step 4: Simplify right side
   12,766.38x = 160,081,018.04
5. Step 5: Solve for x
   x = 160,081,018.04/12,766.38
6. Step 6: Final answer
   x = 12,539.26