Finding the Fourth Proportional to 16,920.82, 23,328.36 and 13,884.82

Step by Step Solution

1. Step 1: Write the proportion equation
   16,920.82 : 23,328.36 = 13,884.82 : x
2. Step 2: Convert to fraction form
   16,920.82/23,328.36 = 13,884.82/x
3. Step 3: Cross multiply
   16,920.82x = 23,328.36 × 13,884.82
4. Step 4: Simplify right side
   16,920.82x = 323,910,079.50
5. Step 5: Solve for x
   x = 323,910,079.50/16,920.82
6. Step 6: Final answer
   x = 19,142.69