Finding the Fourth Proportional to 9,965.72, 14,936.56 and 4,412.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,965.72 : 14,936.56 = 4,412.76 : x
2. Step 2: Convert to fraction form
   9,965.72/14,936.56 = 4,412.76/x
3. Step 3: Cross multiply
   9,965.72x = 14,936.56 × 4,412.76
4. Step 4: Simplify right side
   9,965.72x = 65,911,454.51
5. Step 5: Solve for x
   x = 65,911,454.51/9,965.72
6. Step 6: Final answer
   x = 6,613.82