Finding the Fourth Proportional to 10,569.78, 15,850.59 and 3,172.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,569.78 : 15,850.59 = 3,172.50 : x
2. Step 2: Convert to fraction form
   10,569.78/15,850.59 = 3,172.50/x
3. Step 3: Cross multiply
   10,569.78x = 15,850.59 × 3,172.50
4. Step 4: Simplify right side
   10,569.78x = 50,285,996.78
5. Step 5: Solve for x
   x = 50,285,996.78/10,569.78
6. Step 6: Final answer
   x = 4,757.53