Finding the Fourth Proportional to 16,128.94, 22,255.96 and 9,053.86

Step by Step Solution

1. Step 1: Write the proportion equation
   16,128.94 : 22,255.96 = 9,053.86 : x
2. Step 2: Convert to fraction form
   16,128.94/22,255.96 = 9,053.86/x
3. Step 3: Cross multiply
   16,128.94x = 22,255.96 × 9,053.86
4. Step 4: Simplify right side
   16,128.94x = 201,502,346.01
5. Step 5: Solve for x
   x = 201,502,346.01/16,128.94
6. Step 6: Final answer
   x = 12,493.22