Finding the Fourth Proportional to 21,401.59, 29,467.11 and 19,433.29

Step by Step Solution

1. Step 1: Write the proportion equation
   21,401.59 : 29,467.11 = 19,433.29 : x
2. Step 2: Convert to fraction form
   21,401.59/29,467.11 = 19,433.29/x
3. Step 3: Cross multiply
   21,401.59x = 29,467.11 × 19,433.29
4. Step 4: Simplify right side
   21,401.59x = 572,642,894.09
5. Step 5: Solve for x
   x = 572,642,894.09/21,401.59
6. Step 6: Final answer
   x = 26,757.03