Finding the Fourth Proportional to 7,127.18, 9,835.72 and 3,983.30

Step by Step Solution

1. Step 1: Write the proportion equation
   7,127.18 : 9,835.72 = 3,983.30 : x
2. Step 2: Convert to fraction form
   7,127.18/9,835.72 = 3,983.30/x
3. Step 3: Cross multiply
   7,127.18x = 9,835.72 × 3,983.30
4. Step 4: Simplify right side
   7,127.18x = 39,178,623.48
5. Step 5: Solve for x
   x = 39,178,623.48/7,127.18
6. Step 6: Final answer
   x = 5,497.07