Finding the Fourth Proportional to 16,219.51, 22,382.89 and 9,145.88

Step by Step Solution

1. Step 1: Write the proportion equation
   16,219.51 : 22,382.89 = 9,145.88 : x
2. Step 2: Convert to fraction form
   16,219.51/22,382.89 = 9,145.88/x
3. Step 3: Cross multiply
   16,219.51x = 22,382.89 × 9,145.88
4. Step 4: Simplify right side
   16,219.51x = 204,711,335.35
5. Step 5: Solve for x
   x = 204,711,335.35/16,219.51
6. Step 6: Final answer
   x = 12,621.30