Finding the Fourth Proportional to 16,105.61, 22,214.48 and 15,563.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,105.61 : 22,214.48 = 15,563.72 : x
2. Step 2: Convert to fraction form
   16,105.61/22,214.48 = 15,563.72/x
3. Step 3: Cross multiply
   16,105.61x = 22,214.48 × 15,563.72
4. Step 4: Simplify right side
   16,105.61x = 345,739,924.38
5. Step 5: Solve for x
   x = 345,739,924.38/16,105.61
6. Step 6: Final answer
   x = 21,467.05