Finding the Fourth Proportional to 7,764.72, 10,715.30 and 4,227.92

Step by Step Solution

1. Step 1: Write the proportion equation
   7,764.72 : 10,715.30 = 4,227.92 : x
2. Step 2: Convert to fraction form
   7,764.72/10,715.30 = 4,227.92/x
3. Step 3: Cross multiply
   7,764.72x = 10,715.30 × 4,227.92
4. Step 4: Simplify right side
   7,764.72x = 45,303,431.18
5. Step 5: Solve for x
   x = 45,303,431.18/7,764.72
6. Step 6: Final answer
   x = 5,834.52