Finding the Fourth Proportional to 7,131.52, 9,841.52 and 3,987.71

Step by Step Solution

1. Step 1: Write the proportion equation
   7,131.52 : 9,841.52 = 3,987.71 : x
2. Step 2: Convert to fraction form
   7,131.52/9,841.52 = 3,987.71/x
3. Step 3: Cross multiply
   7,131.52x = 9,841.52 × 3,987.71
4. Step 4: Simplify right side
   7,131.52x = 39,245,088.48
5. Step 5: Solve for x
   x = 39,245,088.48/7,131.52
6. Step 6: Final answer
   x = 5,503.05