Finding the Fourth Proportional to 16,180.42, 22,321.76 and 13,208.53

Step by Step Solution

1. Step 1: Write the proportion equation
   16,180.42 : 22,321.76 = 13,208.53 : x
2. Step 2: Convert to fraction form
   16,180.42/22,321.76 = 13,208.53/x
3. Step 3: Cross multiply
   16,180.42x = 22,321.76 × 13,208.53
4. Step 4: Simplify right side
   16,180.42x = 294,837,636.61
5. Step 5: Solve for x
   x = 294,837,636.61/16,180.42
6. Step 6: Final answer
   x = 18,221.88