Finding the Fourth Proportional to 22,081.12, 30,472.34 and 12,009.78

Step by Step Solution

1. Step 1: Write the proportion equation
   22,081.12 : 30,472.34 = 12,009.78 : x
2. Step 2: Convert to fraction form
   22,081.12/30,472.34 = 12,009.78/x
3. Step 3: Cross multiply
   22,081.12x = 30,472.34 × 12,009.78
4. Step 4: Simplify right side
   22,081.12x = 365,966,039.44
5. Step 5: Solve for x
   x = 365,966,039.44/22,081.12
6. Step 6: Final answer
   x = 16,573.71