Finding the Fourth Proportional to 12,704.34, 19,058.37 and 3,939.96

Step by Step Solution

1. Step 1: Write the proportion equation
   12,704.34 : 19,058.37 = 3,939.96 : x
2. Step 2: Convert to fraction form
   12,704.34/19,058.37 = 3,939.96/x
3. Step 3: Cross multiply
   12,704.34x = 19,058.37 × 3,939.96
4. Step 4: Simplify right side
   12,704.34x = 75,089,215.47
5. Step 5: Solve for x
   x = 75,089,215.47/12,704.34
6. Step 6: Final answer
   x = 5,910.52