Finding the Fourth Proportional to 16,536.24, 24,780.72 and 13,214.60

Step by Step Solution

1. Step 1: Write the proportion equation
   16,536.24 : 24,780.72 = 13,214.60 : x
2. Step 2: Convert to fraction form
   16,536.24/24,780.72 = 13,214.60/x
3. Step 3: Cross multiply
   16,536.24x = 24,780.72 × 13,214.60
4. Step 4: Simplify right side
   16,536.24x = 327,467,178.61
5. Step 5: Solve for x
   x = 327,467,178.61/16,536.24
6. Step 6: Final answer
   x = 19,803.00