Finding the Fourth Proportional to 25,578.69, 35,298.69 and 14,966.28

Step by Step Solution

1. Step 1: Write the proportion equation
   25,578.69 : 35,298.69 = 14,966.28 : x
2. Step 2: Convert to fraction form
   25,578.69/35,298.69 = 14,966.28/x
3. Step 3: Cross multiply
   25,578.69x = 35,298.69 × 14,966.28
4. Step 4: Simplify right side
   25,578.69x = 528,290,078.17
5. Step 5: Solve for x
   x = 528,290,078.17/25,578.69
6. Step 6: Final answer
   x = 20,653.52