Finding the Fourth Proportional to 7,436.54, 10,248.90 and 7,223.30

Step by Step Solution

1. Step 1: Write the proportion equation
   7,436.54 : 10,248.90 = 7,223.30 : x
2. Step 2: Convert to fraction form
   7,436.54/10,248.90 = 7,223.30/x
3. Step 3: Cross multiply
   7,436.54x = 10,248.90 × 7,223.30
4. Step 4: Simplify right side
   7,436.54x = 74,030,879.37
5. Step 5: Solve for x
   x = 74,030,879.37/7,436.54
6. Step 6: Final answer
   x = 9,955.02