Finding the Fourth Proportional to 9,968.56, 13,756.50 and 5,776.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,968.56 : 13,756.50 = 5,776.72 : x
2. Step 2: Convert to fraction form
   9,968.56/13,756.50 = 5,776.72/x
3. Step 3: Cross multiply
   9,968.56x = 13,756.50 × 5,776.72
4. Step 4: Simplify right side
   9,968.56x = 79,467,448.68
5. Step 5: Solve for x
   x = 79,467,448.68/9,968.56
6. Step 6: Final answer
   x = 7,971.81