Finding the Fourth Proportional to 16,005.12, 22,086.96 and 8,931.53

Step by Step Solution

1. Step 1: Write the proportion equation
   16,005.12 : 22,086.96 = 8,931.53 : x
2. Step 2: Convert to fraction form
   16,005.12/22,086.96 = 8,931.53/x
3. Step 3: Cross multiply
   16,005.12x = 22,086.96 × 8,931.53
4. Step 4: Simplify right side
   16,005.12x = 197,270,235.41
5. Step 5: Solve for x
   x = 197,270,235.41/16,005.12
6. Step 6: Final answer
   x = 12,325.45