Finding the Fourth Proportional to 14,066.41, 19,411.50 and 7,778.80

Step by Step Solution

1. Step 1: Write the proportion equation
   14,066.41 : 19,411.50 = 7,778.80 : x
2. Step 2: Convert to fraction form
   14,066.41/19,411.50 = 7,778.80/x
3. Step 3: Cross multiply
   14,066.41x = 19,411.50 × 7,778.80
4. Step 4: Simplify right side
   14,066.41x = 150,998,176.20
5. Step 5: Solve for x
   x = 150,998,176.20/14,066.41
6. Step 6: Final answer
   x = 10,734.66