Finding the Fourth Proportional to 9,964.88, 14,919.12 and 5,274.24

Step by Step Solution

1. Step 1: Write the proportion equation
   9,964.88 : 14,919.12 = 5,274.24 : x
2. Step 2: Convert to fraction form
   9,964.88/14,919.12 = 5,274.24/x
3. Step 3: Cross multiply
   9,964.88x = 14,919.12 × 5,274.24
4. Step 4: Simplify right side
   9,964.88x = 78,687,019.47
5. Step 5: Solve for x
   x = 78,687,019.47/9,964.88
6. Step 6: Final answer
   x = 7,896.43