Finding the Fourth Proportional to 7,127.31, 9,835.79 and 3,983.50

Step by Step Solution

1. Step 1: Write the proportion equation
   7,127.31 : 9,835.79 = 3,983.50 : x
2. Step 2: Convert to fraction form
   7,127.31/9,835.79 = 3,983.50/x
3. Step 3: Cross multiply
   7,127.31x = 9,835.79 × 3,983.50
4. Step 4: Simplify right side
   7,127.31x = 39,180,869.47
5. Step 5: Solve for x
   x = 39,180,869.47/7,127.31
6. Step 6: Final answer
   x = 5,497.29