Finding the Fourth Proportional to 9,965.72, 13,752.06 and 5,987

Step by Step Solution

1. Step 1: Write the proportion equation
   9,965.72 : 13,752.06 = 5,987 : x
2. Step 2: Convert to fraction form
   9,965.72/13,752.06 = 5,987/x
3. Step 3: Cross multiply
   9,965.72x = 13,752.06 × 5,987
4. Step 4: Simplify right side
   9,965.72x = 82,333,583.22
5. Step 5: Solve for x
   x = 82,333,583.22/9,965.72
6. Step 6: Final answer
   x = 8,261.68