Finding the Fourth Proportional to 10,972.50, 16,458.78 and 2,764.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,972.50 : 16,458.78 = 2,764.50 : x
2. Step 2: Convert to fraction form
   10,972.50/16,458.78 = 2,764.50/x
3. Step 3: Cross multiply
   10,972.50x = 16,458.78 × 2,764.50
4. Step 4: Simplify right side
   10,972.50x = 45,500,297.31
5. Step 5: Solve for x
   x = 45,500,297.31/10,972.50
6. Step 6: Final answer
   x = 4,146.76