Finding the Fourth Proportional to 3,673.76, 5,512.05 and 2,928.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,673.76 : 5,512.05 = 2,928.15 : x
2. Step 2: Convert to fraction form
   3,673.76/5,512.05 = 2,928.15/x
3. Step 3: Cross multiply
   3,673.76x = 5,512.05 × 2,928.15
4. Step 4: Simplify right side
   3,673.76x = 16,140,109.21
5. Step 5: Solve for x
   x = 16,140,109.21/3,673.76
6. Step 6: Final answer
   x = 4,393.35