Finding the Fourth Proportional to 21,302.09, 29,401.89 and 13,241.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,302.09 : 29,401.89 = 13,241.82 : x
2. Step 2: Convert to fraction form
   21,302.09/29,401.89 = 13,241.82/x
3. Step 3: Cross multiply
   21,302.09x = 29,401.89 × 13,241.82
4. Step 4: Simplify right side
   21,302.09x = 389,334,535.04
5. Step 5: Solve for x
   x = 389,334,535.04/21,302.09
6. Step 6: Final answer
   x = 18,276.82