Finding the Fourth Proportional to 10,019.31, 13,831.10 and 5,987.57

Step by Step Solution

1. Step 1: Write the proportion equation
   10,019.31 : 13,831.10 = 5,987.57 : x
2. Step 2: Convert to fraction form
   10,019.31/13,831.10 = 5,987.57/x
3. Step 3: Cross multiply
   10,019.31x = 13,831.10 × 5,987.57
4. Step 4: Simplify right side
   10,019.31x = 82,814,580.33
5. Step 5: Solve for x
   x = 82,814,580.33/10,019.31
6. Step 6: Final answer
   x = 8,265.50