Finding the Fourth Proportional to 21,022.24, 29,024.20 and 13,075.28

Step by Step Solution

1. Step 1: Write the proportion equation
   21,022.24 : 29,024.20 = 13,075.28 : x
2. Step 2: Convert to fraction form
   21,022.24/29,024.20 = 13,075.28/x
3. Step 3: Cross multiply
   21,022.24x = 29,024.20 × 13,075.28
4. Step 4: Simplify right side
   21,022.24x = 379,499,541.78
5. Step 5: Solve for x
   x = 379,499,541.78/21,022.24
6. Step 6: Final answer
   x = 18,052.29