Finding the Fourth Proportional to 21,309.22, 29,401.61 and 13,753.95

Step by Step Solution

1. Step 1: Write the proportion equation
   21,309.22 : 29,401.61 = 13,753.95 : x
2. Step 2: Convert to fraction form
   21,309.22/29,401.61 = 13,753.95/x
3. Step 3: Cross multiply
   21,309.22x = 29,401.61 × 13,753.95
4. Step 4: Simplify right side
   21,309.22x = 404,388,273.86
5. Step 5: Solve for x
   x = 404,388,273.86/21,309.22
6. Step 6: Final answer
   x = 18,977.15