Finding the Fourth Proportional to 9,379.53, 14,067.81 and 3,139.49

Step by Step Solution

1. Step 1: Write the proportion equation
   9,379.53 : 14,067.81 = 3,139.49 : x
2. Step 2: Convert to fraction form
   9,379.53/14,067.81 = 3,139.49/x
3. Step 3: Cross multiply
   9,379.53x = 14,067.81 × 3,139.49
4. Step 4: Simplify right side
   9,379.53x = 44,165,748.82
5. Step 5: Solve for x
   x = 44,165,748.82/9,379.53
6. Step 6: Final answer
   x = 4,708.74