Finding the Fourth Proportional to 10,406.90, 15,610.69 and 3,831.55

Step by Step Solution

1. Step 1: Write the proportion equation
   10,406.90 : 15,610.69 = 3,831.55 : x
2. Step 2: Convert to fraction form
   10,406.90/15,610.69 = 3,831.55/x
3. Step 3: Cross multiply
   10,406.90x = 15,610.69 × 3,831.55
4. Step 4: Simplify right side
   10,406.90x = 59,813,061.22
5. Step 5: Solve for x
   x = 59,813,061.22/10,406.90
6. Step 6: Final answer
   x = 5,747.44