Finding the Fourth Proportional to 7,472.05, 10,311.45 and 4,114.78

Step by Step Solution

1. Step 1: Write the proportion equation
   7,472.05 : 10,311.45 = 4,114.78 : x
2. Step 2: Convert to fraction form
   7,472.05/10,311.45 = 4,114.78/x
3. Step 3: Cross multiply
   7,472.05x = 10,311.45 × 4,114.78
4. Step 4: Simplify right side
   7,472.05x = 42,429,348.23
5. Step 5: Solve for x
   x = 42,429,348.23/7,472.05
6. Step 6: Final answer
   x = 5,678.41