Finding the Fourth Proportional to 8,464.78, 12,683.14 and 5,987.32

Step by Step Solution

1. Step 1: Write the proportion equation
   8,464.78 : 12,683.14 = 5,987.32 : x
2. Step 2: Convert to fraction form
   8,464.78/12,683.14 = 5,987.32/x
3. Step 3: Cross multiply
   8,464.78x = 12,683.14 × 5,987.32
4. Step 4: Simplify right side
   8,464.78x = 75,938,017.78
5. Step 5: Solve for x
   x = 75,938,017.78/8,464.78
6. Step 6: Final answer
   x = 8,971.06