Finding the Fourth Proportional to 16,638.90, 24,951.06 and 4,949.79

Step by Step Solution

1. Step 1: Write the proportion equation
   16,638.90 : 24,951.06 = 4,949.79 : x
2. Step 2: Convert to fraction form
   16,638.90/24,951.06 = 4,949.79/x
3. Step 3: Cross multiply
   16,638.90x = 24,951.06 × 4,949.79
4. Step 4: Simplify right side
   16,638.90x = 123,502,507.28
5. Step 5: Solve for x
   x = 123,502,507.28/16,638.90
6. Step 6: Final answer
   x = 7,422.52