Finding the Fourth Proportional to 6,630.33, 9,150.74 and 4,279.31

Step by Step Solution

1. Step 1: Write the proportion equation
   6,630.33 : 9,150.74 = 4,279.31 : x
2. Step 2: Convert to fraction form
   6,630.33/9,150.74 = 4,279.31/x
3. Step 3: Cross multiply
   6,630.33x = 9,150.74 × 4,279.31
4. Step 4: Simplify right side
   6,630.33x = 39,158,853.19
5. Step 5: Solve for x
   x = 39,158,853.19/6,630.33
6. Step 6: Final answer
   x = 5,906.02