Finding the Fourth Proportional to 12,109.97, 18,168.20 and 4,716.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,109.97 : 18,168.20 = 4,716.56 : x
2. Step 2: Convert to fraction form
   12,109.97/18,168.20 = 4,716.56/x
3. Step 3: Cross multiply
   12,109.97x = 18,168.20 × 4,716.56
4. Step 4: Simplify right side
   12,109.97x = 85,691,405.39
5. Step 5: Solve for x
   x = 85,691,405.39/12,109.97
6. Step 6: Final answer
   x = 7,076.10