Finding the Fourth Proportional to 16,005.48, 22,078.62 and 12,418.80

Step by Step Solution

1. Step 1: Write the proportion equation
   16,005.48 : 22,078.62 = 12,418.80 : x
2. Step 2: Convert to fraction form
   16,005.48/22,078.62 = 12,418.80/x
3. Step 3: Cross multiply
   16,005.48x = 22,078.62 × 12,418.80
4. Step 4: Simplify right side
   16,005.48x = 274,189,966.06
5. Step 5: Solve for x
   x = 274,189,966.06/16,005.48
6. Step 6: Final answer
   x = 17,131.01