Finding the Fourth Proportional to 9,635.28, 14,454.72 and 5,479.98

Step by Step Solution

1. Step 1: Write the proportion equation
   9,635.28 : 14,454.72 = 5,479.98 : x
2. Step 2: Convert to fraction form
   9,635.28/14,454.72 = 5,479.98/x
3. Step 3: Cross multiply
   9,635.28x = 14,454.72 × 5,479.98
4. Step 4: Simplify right side
   9,635.28x = 79,211,576.51
5. Step 5: Solve for x
   x = 79,211,576.51/9,635.28
6. Step 6: Final answer
   x = 8,220.99