Finding the Fourth Proportional to 11,945.34, 16,481.88 and 7,228.62

Step by Step Solution

1. Step 1: Write the proportion equation
   11,945.34 : 16,481.88 = 7,228.62 : x
2. Step 2: Convert to fraction form
   11,945.34/16,481.88 = 7,228.62/x
3. Step 3: Cross multiply
   11,945.34x = 16,481.88 × 7,228.62
4. Step 4: Simplify right side
   11,945.34x = 119,141,247.41
5. Step 5: Solve for x
   x = 119,141,247.41/11,945.34
6. Step 6: Final answer
   x = 9,973.87