Finding the Fourth Proportional to 22,218.72, 33,311.58 and 13,451.52

Step by Step Solution

1. Step 1: Write the proportion equation
   22,218.72 : 33,311.58 = 13,451.52 : x
2. Step 2: Convert to fraction form
   22,218.72/33,311.58 = 13,451.52/x
3. Step 3: Cross multiply
   22,218.72x = 33,311.58 × 13,451.52
4. Step 4: Simplify right side
   22,218.72x = 448,091,384.60
5. Step 5: Solve for x
   x = 448,091,384.60/22,218.72
6. Step 6: Final answer
   x = 20,167.29