| ( | 17337 | + | 19206 | + | 18273 | + | x | ) | ÷ | 4 | = | 18290 |
| Left side of the equation = | 17337 | × | 1 4 | + | 19206 | × | 1 4 | + | 18273 | × | 1 4 | + | x | × | 1 4 |
| = | 17337 4 | + | 9603 2 | + | 18273 4 | + | x | × | 1 4 |
| = | 13704 | + | 1 4 | x |
| 13704 | + | 1 4 | x | = | 18290 |
1 4 | x | = | 18290 | − | 13704 |
1 4 | x | = | 4586 |
| x | = | 4586 | ÷ | 1 4 |
| = | 4586 | × | 4 |
| x | = | 18344 |