Finding the Fourth Proportional to 21,662.90, 29,882.33 and 13,043.09

Step by Step Solution

1. Step 1: Write the proportion equation
   21,662.90 : 29,882.33 = 13,043.09 : x
2. Step 2: Convert to fraction form
   21,662.90/29,882.33 = 13,043.09/x
3. Step 3: Cross multiply
   21,662.90x = 29,882.33 × 13,043.09
4. Step 4: Simplify right side
   21,662.90x = 389,758,051.37
5. Step 5: Solve for x
   x = 389,758,051.37/21,662.90
6. Step 6: Final answer
   x = 17,991.96