Finding the Fourth Proportional to 11,805.78, 16,299.81 and 7,336.20

Step by Step Solution

1. Step 1: Write the proportion equation
   11,805.78 : 16,299.81 = 7,336.20 : x
2. Step 2: Convert to fraction form
   11,805.78/16,299.81 = 7,336.20/x
3. Step 3: Cross multiply
   11,805.78x = 16,299.81 × 7,336.20
4. Step 4: Simplify right side
   11,805.78x = 119,578,666.12
5. Step 5: Solve for x
   x = 119,578,666.12/11,805.78
6. Step 6: Final answer
   x = 10,128.82