Answer:
$5,258,333
Step-by-step explanation:
Arlington Company weighted-average accumulated expenditures
March 1 Expenditure $3,333,333
($4,000,000 ×10/12)
Add June 1 Expenditure $1,925,000
($3,300,000 ×7/12)
Add Dec 31 Expenditure $0
($5,000,000 ×0/12)
Weighted-average accumulated expenditures $5,258,333
($3,333,333+$1,925,000)