Finding the Fourth Proportional to 3,969.48, 5,477.59 and 2,176.67

Step by Step Solution

1. Step 1: Write the proportion equation
   3,969.48 : 5,477.59 = 2,176.67 : x
2. Step 2: Convert to fraction form
   3,969.48/5,477.59 = 2,176.67/x
3. Step 3: Cross multiply
   3,969.48x = 5,477.59 × 2,176.67
4. Step 4: Simplify right side
   3,969.48x = 11,922,905.83
5. Step 5: Solve for x
   x = 11,922,905.83/3,969.48
6. Step 6: Final answer
   x = 3,003.64