Finding the Fourth Proportional to 11,979.32, 17,969.46 and 5,821.88

Step by Step Solution

1. Step 1: Write the proportion equation
   11,979.32 : 17,969.46 = 5,821.88 : x
2. Step 2: Convert to fraction form
   11,979.32/17,969.46 = 5,821.88/x
3. Step 3: Cross multiply
   11,979.32x = 17,969.46 × 5,821.88
4. Step 4: Simplify right side
   11,979.32x = 104,616,039.78
5. Step 5: Solve for x
   x = 104,616,039.78/11,979.32
6. Step 6: Final answer
   x = 8,733.05