Finding the Fourth Proportional to 11,867.31, 16,374.69 and 6,831.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,867.31 : 16,374.69 = 6,831.72 : x
2. Step 2: Convert to fraction form
   11,867.31/16,374.69 = 6,831.72/x
3. Step 3: Cross multiply
   11,867.31x = 16,374.69 × 6,831.72
4. Step 4: Simplify right side
   11,867.31x = 111,867,297.17
5. Step 5: Solve for x
   x = 111,867,297.17/11,867.31
6. Step 6: Final answer
   x = 9,426.51