Finding the Fourth Proportional to 12,085.96, 18,129.14 and 3,320.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,085.96 : 18,129.14 = 3,320.82 : x
2. Step 2: Convert to fraction form
   12,085.96/18,129.14 = 3,320.82/x
3. Step 3: Cross multiply
   12,085.96x = 18,129.14 × 3,320.82
4. Step 4: Simplify right side
   12,085.96x = 60,203,610.69
5. Step 5: Solve for x
   x = 60,203,610.69/12,085.96
6. Step 6: Final answer
   x = 4,981.28