Finding the Fourth Proportional to 11,767.72, 17,654.12 and 3,976.36

Step by Step Solution

1. Step 1: Write the proportion equation
   11,767.72 : 17,654.12 = 3,976.36 : x
2. Step 2: Convert to fraction form
   11,767.72/17,654.12 = 3,976.36/x
3. Step 3: Cross multiply
   11,767.72x = 17,654.12 × 3,976.36
4. Step 4: Simplify right side
   11,767.72x = 70,199,136.60
5. Step 5: Solve for x
   x = 70,199,136.60/11,767.72
6. Step 6: Final answer
   x = 5,965.40