Finding the Fourth Proportional to 11,823.63, 17,726.56 and 5,580.09

Step by Step Solution

1. Step 1: Write the proportion equation
   11,823.63 : 17,726.56 = 5,580.09 : x
2. Step 2: Convert to fraction form
   11,823.63/17,726.56 = 5,580.09/x
3. Step 3: Cross multiply
   11,823.63x = 17,726.56 × 5,580.09
4. Step 4: Simplify right side
   11,823.63x = 98,915,719.30
5. Step 5: Solve for x
   x = 98,915,719.30/11,823.63
6. Step 6: Final answer
   x = 8,365.94