Finding the Fourth Proportional to 14,395.15, 21,555.81 and 12,180.82

Step by Step Solution

1. Step 1: Write the proportion equation
   14,395.15 : 21,555.81 = 12,180.82 : x
2. Step 2: Convert to fraction form
   14,395.15/21,555.81 = 12,180.82/x
3. Step 3: Cross multiply
   14,395.15x = 21,555.81 × 12,180.82
4. Step 4: Simplify right side
   14,395.15x = 262,567,441.56
5. Step 5: Solve for x
   x = 262,567,441.56/14,395.15
6. Step 6: Final answer
   x = 18,239.99