Finding the Fourth Proportional to 9,967.21, 13,754.82 and 5,718.46

Step by Step Solution

1. Step 1: Write the proportion equation
   9,967.21 : 13,754.82 = 5,718.46 : x
2. Step 2: Convert to fraction form
   9,967.21/13,754.82 = 5,718.46/x
3. Step 3: Cross multiply
   9,967.21x = 13,754.82 × 5,718.46
4. Step 4: Simplify right side
   9,967.21x = 78,656,387.98
5. Step 5: Solve for x
   x = 78,656,387.98/9,967.21
6. Step 6: Final answer
   x = 7,891.52