Finding the Fourth Proportional to 8,591.04, 12,878.33 and 5,461.35

Step by Step Solution

1. Step 1: Write the proportion equation
   8,591.04 : 12,878.33 = 5,461.35 : x
2. Step 2: Convert to fraction form
   8,591.04/12,878.33 = 5,461.35/x
3. Step 3: Cross multiply
   8,591.04x = 12,878.33 × 5,461.35
4. Step 4: Simplify right side
   8,591.04x = 70,333,067.55
5. Step 5: Solve for x
   x = 70,333,067.55/8,591.04
6. Step 6: Final answer
   x = 8,186.79