Finding the Fourth Proportional to 21,723.98, 32,530.80 and 18,204.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,723.98 : 32,530.80 = 18,204.72 : x
2. Step 2: Convert to fraction form
   21,723.98/32,530.80 = 18,204.72/x
3. Step 3: Cross multiply
   21,723.98x = 32,530.80 × 18,204.72
4. Step 4: Simplify right side
   21,723.98x = 592,214,105.38
5. Step 5: Solve for x
   x = 592,214,105.38/21,723.98
6. Step 6: Final answer
   x = 27,260.85