Finding the Fourth Proportional to 11,827.69, 16,322.45 and 7,643.23

Step by Step Solution

1. Step 1: Write the proportion equation
   11,827.69 : 16,322.45 = 7,643.23 : x
2. Step 2: Convert to fraction form
   11,827.69/16,322.45 = 7,643.23/x
3. Step 3: Cross multiply
   11,827.69x = 16,322.45 × 7,643.23
4. Step 4: Simplify right side
   11,827.69x = 124,756,160.49
5. Step 5: Solve for x
   x = 124,756,160.49/11,827.69
6. Step 6: Final answer
   x = 10,547.81