Finding the Fourth Proportional to 5,811.65, 8,700.77 and 5,401.59

Step by Step Solution

1. Step 1: Write the proportion equation
   5,811.65 : 8,700.77 = 5,401.59 : x
2. Step 2: Convert to fraction form
   5,811.65/8,700.77 = 5,401.59/x
3. Step 3: Cross multiply
   5,811.65x = 8,700.77 × 5,401.59
4. Step 4: Simplify right side
   5,811.65x = 46,997,942.72
5. Step 5: Solve for x
   x = 46,997,942.72/5,811.65
6. Step 6: Final answer
   x = 8,086.85