Finding the Fourth Proportional to 12,707.42, 19,061.52 and 3,942.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,707.42 : 19,061.52 = 3,942.38 : x
2. Step 2: Convert to fraction form
   12,707.42/19,061.52 = 3,942.38/x
3. Step 3: Cross multiply
   12,707.42x = 19,061.52 × 3,942.38
4. Step 4: Simplify right side
   12,707.42x = 75,147,755.22
5. Step 5: Solve for x
   x = 75,147,755.22/12,707.42
6. Step 6: Final answer
   x = 5,913.69