Finding the Fourth Proportional to 16,726.69, 23,111.52 and 16,128

Step by Step Solution

1. Step 1: Write the proportion equation
   16,726.69 : 23,111.52 = 16,128 : x
2. Step 2: Convert to fraction form
   16,726.69/23,111.52 = 16,128/x
3. Step 3: Cross multiply
   16,726.69x = 23,111.52 × 16,128
4. Step 4: Simplify right side
   16,726.69x = 372,742,594.56
5. Step 5: Solve for x
   x = 372,742,594.56/16,726.69
6. Step 6: Final answer
   x = 22,284.30