Finding the Fourth Proportional to 7,456.05, 10,299.30 and 5,225.31

Step by Step Solution

1. Step 1: Write the proportion equation
   7,456.05 : 10,299.30 = 5,225.31 : x
2. Step 2: Convert to fraction form
   7,456.05/10,299.30 = 5,225.31/x
3. Step 3: Cross multiply
   7,456.05x = 10,299.30 × 5,225.31
4. Step 4: Simplify right side
   7,456.05x = 53,817,035.28
5. Step 5: Solve for x
   x = 53,817,035.28/7,456.05
6. Step 6: Final answer
   x = 7,217.90