Finding the Fourth Proportional to 12,086.96, 18,130.64 and 3,321.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,086.96 : 18,130.64 = 3,321.82 : x
2. Step 2: Convert to fraction form
   12,086.96/18,130.64 = 3,321.82/x
3. Step 3: Cross multiply
   12,086.96x = 18,130.64 × 3,321.82
4. Step 4: Simplify right side
   12,086.96x = 60,226,722.56
5. Step 5: Solve for x
   x = 60,226,722.56/12,086.96
6. Step 6: Final answer
   x = 4,982.78