Finding the Fourth Proportional to 11,947.42, 16,487.76 and 7,228.96

Step by Step Solution

1. Step 1: Write the proportion equation
   11,947.42 : 16,487.76 = 7,228.96 : x
2. Step 2: Convert to fraction form
   11,947.42/16,487.76 = 7,228.96/x
3. Step 3: Cross multiply
   11,947.42x = 16,487.76 × 7,228.96
4. Step 4: Simplify right side
   11,947.42x = 119,189,357.53
5. Step 5: Solve for x
   x = 119,189,357.53/11,947.42
6. Step 6: Final answer
   x = 9,976.16