Finding the Fourth Proportional to 21,433.33, 29,592.43 and 13,379.24

Step by Step Solution

1. Step 1: Write the proportion equation
   21,433.33 : 29,592.43 = 13,379.24 : x
2. Step 2: Convert to fraction form
   21,433.33/29,592.43 = 13,379.24/x
3. Step 3: Cross multiply
   21,433.33x = 29,592.43 × 13,379.24
4. Step 4: Simplify right side
   21,433.33x = 395,924,338.94
5. Step 5: Solve for x
   x = 395,924,338.94/21,433.33
6. Step 6: Final answer
   x = 18,472.37