Finding the Fourth Proportional to 19,669.98, 29,489.61 and 13,414.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,669.98 : 29,489.61 = 13,414.50 : x
2. Step 2: Convert to fraction form
   19,669.98/29,489.61 = 13,414.50/x
3. Step 3: Cross multiply
   19,669.98x = 29,489.61 × 13,414.50
4. Step 4: Simplify right side
   19,669.98x = 395,588,373.35
5. Step 5: Solve for x
   x = 395,588,373.35/19,669.98
6. Step 6: Final answer
   x = 20,111.27