Finding the Fourth Proportional to 10,848.50, 16,272.76 and 2,640.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,848.50 : 16,272.76 = 2,640.50 : x
2. Step 2: Convert to fraction form
   10,848.50/16,272.76 = 2,640.50/x
3. Step 3: Cross multiply
   10,848.50x = 16,272.76 × 2,640.50
4. Step 4: Simplify right side
   10,848.50x = 42,968,222.78
5. Step 5: Solve for x
   x = 42,968,222.78/10,848.50
6. Step 6: Final answer
   x = 3,960.75