Finding the Fourth Proportional to 3,849.86, 5,767.73 and 3,434.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,849.86 : 5,767.73 = 3,434.78 : x
2. Step 2: Convert to fraction form
   3,849.86/5,767.73 = 3,434.78/x
3. Step 3: Cross multiply
   3,849.86x = 5,767.73 × 3,434.78
4. Step 4: Simplify right side
   3,849.86x = 19,810,866.48
5. Step 5: Solve for x
   x = 19,810,866.48/3,849.86
6. Step 6: Final answer
   x = 5,145.87