Finding the Fourth Proportional to 9,961.58, 13,747.52 and 5,986.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,961.58 : 13,747.52 = 5,986.10 : x
2. Step 2: Convert to fraction form
   9,961.58/13,747.52 = 5,986.10/x
3. Step 3: Cross multiply
   9,961.58x = 13,747.52 × 5,986.10
4. Step 4: Simplify right side
   9,961.58x = 82,294,078.81
5. Step 5: Solve for x
   x = 82,294,078.81/9,961.58
6. Step 6: Final answer
   x = 8,261.15