Finding the Fourth Proportional to 8,902.92, 12,287.91 and 7,409.37

Step by Step Solution

1. Step 1: Write the proportion equation
   8,902.92 : 12,287.91 = 7,409.37 : x
2. Step 2: Convert to fraction form
   8,902.92/12,287.91 = 7,409.37/x
3. Step 3: Cross multiply
   8,902.92x = 12,287.91 × 7,409.37
4. Step 4: Simplify right side
   8,902.92x = 91,045,671.72
5. Step 5: Solve for x
   x = 91,045,671.72/8,902.92
6. Step 6: Final answer
   x = 10,226.50