Finding the Fourth Proportional to 7,365.72, 10,162.20 and 4,178.67

Step by Step Solution

1. Step 1: Write the proportion equation
   7,365.72 : 10,162.20 = 4,178.67 : x
2. Step 2: Convert to fraction form
   7,365.72/10,162.20 = 4,178.67/x
3. Step 3: Cross multiply
   7,365.72x = 10,162.20 × 4,178.67
4. Step 4: Simplify right side
   7,365.72x = 42,464,480.27
5. Step 5: Solve for x
   x = 42,464,480.27/7,365.72
6. Step 6: Final answer
   x = 5,765.15