Finding the Fourth Proportional to 11,645.40, 16,081.32 and 7,397.83

Step by Step Solution

1. Step 1: Write the proportion equation
   11,645.40 : 16,081.32 = 7,397.83 : x
2. Step 2: Convert to fraction form
   11,645.40/16,081.32 = 7,397.83/x
3. Step 3: Cross multiply
   11,645.40x = 16,081.32 × 7,397.83
4. Step 4: Simplify right side
   11,645.40x = 118,966,871.54
5. Step 5: Solve for x
   x = 118,966,871.54/11,645.40
6. Step 6: Final answer
   x = 10,215.78