Finding the Fourth Proportional to 15,578.52, 21,498.25 and 8,504.94

Step by Step Solution

1. Step 1: Write the proportion equation
   15,578.52 : 21,498.25 = 8,504.94 : x
2. Step 2: Convert to fraction form
   15,578.52/21,498.25 = 8,504.94/x
3. Step 3: Cross multiply
   15,578.52x = 21,498.25 × 8,504.94
4. Step 4: Simplify right side
   15,578.52x = 182,841,283.83
5. Step 5: Solve for x
   x = 182,841,283.83/15,578.52
6. Step 6: Final answer
   x = 11,736.76