Finding the Fourth Proportional to 14,778.72, 22,168.42 and 4,918.79

Step by Step Solution

1. Step 1: Write the proportion equation
   14,778.72 : 22,168.42 = 4,918.79 : x
2. Step 2: Convert to fraction form
   14,778.72/22,168.42 = 4,918.79/x
3. Step 3: Cross multiply
   14,778.72x = 22,168.42 × 4,918.79
4. Step 4: Simplify right side
   14,778.72x = 109,041,845.74
5. Step 5: Solve for x
   x = 109,041,845.74/14,778.72
6. Step 6: Final answer
   x = 7,378.30