Finding the Fourth Proportional to 9,786.96, 14,681.40 and 3,211.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,786.96 : 14,681.40 = 3,211.56 : x
2. Step 2: Convert to fraction form
   9,786.96/14,681.40 = 3,211.56/x
3. Step 3: Cross multiply
   9,786.96x = 14,681.40 × 3,211.56
4. Step 4: Simplify right side
   9,786.96x = 47,150,196.98
5. Step 5: Solve for x
   x = 47,150,196.98/9,786.96
6. Step 6: Final answer
   x = 4,817.66