Finding the Fourth Proportional to 12,771.42, 19,150.54 and 5,745.43

Step by Step Solution

1. Step 1: Write the proportion equation
   12,771.42 : 19,150.54 = 5,745.43 : x
2. Step 2: Convert to fraction form
   12,771.42/19,150.54 = 5,745.43/x
3. Step 3: Cross multiply
   12,771.42x = 19,150.54 × 5,745.43
4. Step 4: Simplify right side
   12,771.42x = 110,028,096.61
5. Step 5: Solve for x
   x = 110,028,096.61/12,771.42
6. Step 6: Final answer
   x = 8,615.18