Finding the Fourth Proportional to 5,861.16, 8,091.90 and 5,205.06

Step by Step Solution

1. Step 1: Write the proportion equation
   5,861.16 : 8,091.90 = 5,205.06 : x
2. Step 2: Convert to fraction form
   5,861.16/8,091.90 = 5,205.06/x
3. Step 3: Cross multiply
   5,861.16x = 8,091.90 × 5,205.06
4. Step 4: Simplify right side
   5,861.16x = 42,118,825.01
5. Step 5: Solve for x
   x = 42,118,825.01/5,861.16
6. Step 6: Final answer
   x = 7,186.09