Finding the Fourth Proportional to 14,066.13, 19,411.86 and 7,778.50

Step by Step Solution

1. Step 1: Write the proportion equation
   14,066.13 : 19,411.86 = 7,778.50 : x
2. Step 2: Convert to fraction form
   14,066.13/19,411.86 = 7,778.50/x
3. Step 3: Cross multiply
   14,066.13x = 19,411.86 × 7,778.50
4. Step 4: Simplify right side
   14,066.13x = 150,995,153.01
5. Step 5: Solve for x
   x = 150,995,153.01/14,066.13
6. Step 6: Final answer
   x = 10,734.66