Finding the Fourth Proportional to 16,109.76, 22,231.68 and 12,069.42

Step by Step Solution

1. Step 1: Write the proportion equation
   16,109.76 : 22,231.68 = 12,069.42 : x
2. Step 2: Convert to fraction form
   16,109.76/22,231.68 = 12,069.42/x
3. Step 3: Cross multiply
   16,109.76x = 22,231.68 × 12,069.42
4. Step 4: Simplify right side
   16,109.76x = 268,323,483.23
5. Step 5: Solve for x
   x = 268,323,483.23/16,109.76
6. Step 6: Final answer
   x = 16,655.96