Finding the Fourth Proportional to 6,618.43, 9,924.73 and 3,109.43

Step by Step Solution

1. Step 1: Write the proportion equation
   6,618.43 : 9,924.73 = 3,109.43 : x
2. Step 2: Convert to fraction form
   6,618.43/9,924.73 = 3,109.43/x
3. Step 3: Cross multiply
   6,618.43x = 9,924.73 × 3,109.43
4. Step 4: Simplify right side
   6,618.43x = 30,860,256.57
5. Step 5: Solve for x
   x = 30,860,256.57/6,618.43
6. Step 6: Final answer
   x = 4,662.78