Finding the Fourth Proportional to 12,766.44, 19,155.48 and 5,742.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,766.44 : 19,155.48 = 5,742.62 : x
2. Step 2: Convert to fraction form
   12,766.44/19,155.48 = 5,742.62/x
3. Step 3: Cross multiply
   12,766.44x = 19,155.48 × 5,742.62
4. Step 4: Simplify right side
   12,766.44x = 110,002,642.56
5. Step 5: Solve for x
   x = 110,002,642.56/12,766.44
6. Step 6: Final answer
   x = 8,616.55