Finding the Fourth Proportional to 16,162.58, 22,299 and 13,173.28

Step by Step Solution

1. Step 1: Write the proportion equation
   16,162.58 : 22,299 = 13,173.28 : x
2. Step 2: Convert to fraction form
   16,162.58/22,299 = 13,173.28/x
3. Step 3: Cross multiply
   16,162.58x = 22,299 × 13,173.28
4. Step 4: Simplify right side
   16,162.58x = 293,750,970.72
5. Step 5: Solve for x
   x = 293,750,970.72/16,162.58
6. Step 6: Final answer
   x = 18,174.76