Finding the Fourth Proportional to 21,340.83, 29,453.94 and 12,395.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,340.83 : 29,453.94 = 12,395.82 : x
2. Step 2: Convert to fraction form
   21,340.83/29,453.94 = 12,395.82/x
3. Step 3: Cross multiply
   21,340.83x = 29,453.94 × 12,395.82
4. Step 4: Simplify right side
   21,340.83x = 365,105,738.53
5. Step 5: Solve for x
   x = 365,105,738.53/21,340.83
6. Step 6: Final answer
   x = 17,108.32