Finding the Fourth Proportional to 5,776.05, 8,705.34 and 5,454.15

Step by Step Solution

1. Step 1: Write the proportion equation
   5,776.05 : 8,705.34 = 5,454.15 : x
2. Step 2: Convert to fraction form
   5,776.05/8,705.34 = 5,454.15/x
3. Step 3: Cross multiply
   5,776.05x = 8,705.34 × 5,454.15
4. Step 4: Simplify right side
   5,776.05x = 47,480,230.16
5. Step 5: Solve for x
   x = 47,480,230.16/5,776.05
6. Step 6: Final answer
   x = 8,220.19