Finding the Fourth Proportional to 10,986.06, 16,475.67 and 3,965.16

Step by Step Solution

1. Step 1: Write the proportion equation
   10,986.06 : 16,475.67 = 3,965.16 : x
2. Step 2: Convert to fraction form
   10,986.06/16,475.67 = 3,965.16/x
3. Step 3: Cross multiply
   10,986.06x = 16,475.67 × 3,965.16
4. Step 4: Simplify right side
   10,986.06x = 65,328,667.66
5. Step 5: Solve for x
   x = 65,328,667.66/10,986.06
6. Step 6: Final answer
   x = 5,946.51