Finding the Fourth Proportional to 9,144.06, 13,716.15 and 3,221.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,144.06 : 13,716.15 = 3,221.10 : x
2. Step 2: Convert to fraction form
   9,144.06/13,716.15 = 3,221.10/x
3. Step 3: Cross multiply
   9,144.06x = 13,716.15 × 3,221.10
4. Step 4: Simplify right side
   9,144.06x = 44,181,090.77
5. Step 5: Solve for x
   x = 44,181,090.77/9,144.06
6. Step 6: Final answer
   x = 4,831.67