Finding the Fourth Proportional to 16,456.18, 22,692.94 and 12,432.91

Step by Step Solution

1. Step 1: Write the proportion equation
   16,456.18 : 22,692.94 = 12,432.91 : x
2. Step 2: Convert to fraction form
   16,456.18/22,692.94 = 12,432.91/x
3. Step 3: Cross multiply
   16,456.18x = 22,692.94 × 12,432.91
4. Step 4: Simplify right side
   16,456.18x = 282,139,280.66
5. Step 5: Solve for x
   x = 282,139,280.66/16,456.18
6. Step 6: Final answer
   x = 17,144.88