Finding the Fourth Proportional to 7,519.82, 10,385.54 and 5,168.78

Step by Step Solution

1. Step 1: Write the proportion equation
   7,519.82 : 10,385.54 = 5,168.78 : x
2. Step 2: Convert to fraction form
   7,519.82/10,385.54 = 5,168.78/x
3. Step 3: Cross multiply
   7,519.82x = 10,385.54 × 5,168.78
4. Step 4: Simplify right side
   7,519.82x = 53,680,571.44
5. Step 5: Solve for x
   x = 53,680,571.44/7,519.82
6. Step 6: Final answer
   x = 7,138.54