Finding the Fourth Proportional to 7,479.72, 10,321.96 and 4,122.84

Step by Step Solution

1. Step 1: Write the proportion equation
   7,479.72 : 10,321.96 = 4,122.84 : x
2. Step 2: Convert to fraction form
   7,479.72/10,321.96 = 4,122.84/x
3. Step 3: Cross multiply
   7,479.72x = 10,321.96 × 4,122.84
4. Step 4: Simplify right side
   7,479.72x = 42,555,789.57
5. Step 5: Solve for x
   x = 42,555,789.57/7,479.72
6. Step 6: Final answer
   x = 5,689.49