Finding the Fourth Proportional to 9,387.57, 14,081.90 and 3,147.33

Step by Step Solution

1. Step 1: Write the proportion equation
   9,387.57 : 14,081.90 = 3,147.33 : x
2. Step 2: Convert to fraction form
   9,387.57/14,081.90 = 3,147.33/x
3. Step 3: Cross multiply
   9,387.57x = 14,081.90 × 3,147.33
4. Step 4: Simplify right side
   9,387.57x = 44,320,370.59
5. Step 5: Solve for x
   x = 44,320,370.59/9,387.57
6. Step 6: Final answer
   x = 4,721.18