Finding the Fourth Proportional to 9,851.86, 14,778.72 and 2,831.86

Step by Step Solution

1. Step 1: Write the proportion equation
   9,851.86 : 14,778.72 = 2,831.86 : x
2. Step 2: Convert to fraction form
   9,851.86/14,778.72 = 2,831.86/x
3. Step 3: Cross multiply
   9,851.86x = 14,778.72 × 2,831.86
4. Step 4: Simplify right side
   9,851.86x = 41,851,266.02
5. Step 5: Solve for x
   x = 41,851,266.02/9,851.86
6. Step 6: Final answer
   x = 4,248.06