Finding the Fourth Proportional to 9,381.50, 14,067.47 and 3,139.27

Step by Step Solution

1. Step 1: Write the proportion equation
   9,381.50 : 14,067.47 = 3,139.27 : x
2. Step 2: Convert to fraction form
   9,381.50/14,067.47 = 3,139.27/x
3. Step 3: Cross multiply
   9,381.50x = 14,067.47 × 3,139.27
4. Step 4: Simplify right side
   9,381.50x = 44,161,586.55
5. Step 5: Solve for x
   x = 44,161,586.55/9,381.50
6. Step 6: Final answer
   x = 4,707.31