Finding the Fourth Proportional to 7,218.65, 10,831.31 and 3,927.82

Step by Step Solution

1. Step 1: Write the proportion equation
   7,218.65 : 10,831.31 = 3,927.82 : x
2. Step 2: Convert to fraction form
   7,218.65/10,831.31 = 3,927.82/x
3. Step 3: Cross multiply
   7,218.65x = 10,831.31 × 3,927.82
4. Step 4: Simplify right side
   7,218.65x = 42,543,436.04
5. Step 5: Solve for x
   x = 42,543,436.04/7,218.65
6. Step 6: Final answer
   x = 5,893.54