Finding the Fourth Proportional to 21,028.68, 29,018.52 and 12,075.48

Step by Step Solution

1. Step 1: Write the proportion equation
   21,028.68 : 29,018.52 = 12,075.48 : x
2. Step 2: Convert to fraction form
   21,028.68/29,018.52 = 12,075.48/x
3. Step 3: Cross multiply
   21,028.68x = 29,018.52 × 12,075.48
4. Step 4: Simplify right side
   21,028.68x = 350,412,557.89
5. Step 5: Solve for x
   x = 350,412,557.89/21,028.68
6. Step 6: Final answer
   x = 16,663.55