Finding the Fourth Proportional to 16,164.20, 22,312.28 and 13,659.59

Step by Step Solution

1. Step 1: Write the proportion equation
   16,164.20 : 22,312.28 = 13,659.59 : x
2. Step 2: Convert to fraction form
   16,164.20/22,312.28 = 13,659.59/x
3. Step 3: Cross multiply
   16,164.20x = 22,312.28 × 13,659.59
4. Step 4: Simplify right side
   16,164.20x = 304,776,596.77
5. Step 5: Solve for x
   x = 304,776,596.77/16,164.20
6. Step 6: Final answer
   x = 18,855.04