Finding the Fourth Proportional to 16,444.40, 22,705.82 and 12,661.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,444.40 : 22,705.82 = 12,661.72 : x
2. Step 2: Convert to fraction form
   16,444.40/22,705.82 = 12,661.72/x
3. Step 3: Cross multiply
   16,444.40x = 22,705.82 × 12,661.72
4. Step 4: Simplify right side
   16,444.40x = 287,494,735.21
5. Step 5: Solve for x
   x = 287,494,735.21/16,444.40
6. Step 6: Final answer
   x = 17,482.84