Finding the Fourth Proportional to 7,127.19, 9,835.56 and 3,983.31

Step by Step Solution

1. Step 1: Write the proportion equation
   7,127.19 : 9,835.56 = 3,983.31 : x
2. Step 2: Convert to fraction form
   7,127.19/9,835.56 = 3,983.31/x
3. Step 3: Cross multiply
   7,127.19x = 9,835.56 × 3,983.31
4. Step 4: Simplify right side
   7,127.19x = 39,178,084.50
5. Step 5: Solve for x
   x = 39,178,084.50/7,127.19
6. Step 6: Final answer
   x = 5,496.99