Finding the Fourth Proportional to 8,467.56, 12,686.94 and 5,990.25

Step by Step Solution

1. Step 1: Write the proportion equation
   8,467.56 : 12,686.94 = 5,990.25 : x
2. Step 2: Convert to fraction form
   8,467.56/12,686.94 = 5,990.25/x
3. Step 3: Cross multiply
   8,467.56x = 12,686.94 × 5,990.25
4. Step 4: Simplify right side
   8,467.56x = 75,997,942.34
5. Step 5: Solve for x
   x = 75,997,942.34/8,467.56
6. Step 6: Final answer
   x = 8,975.19