Finding the Fourth Proportional to 10,100.92, 13,936.08 and 7,969.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,100.92 : 13,936.08 = 7,969.72 : x
2. Step 2: Convert to fraction form
   10,100.92/13,936.08 = 7,969.72/x
3. Step 3: Cross multiply
   10,100.92x = 13,936.08 × 7,969.72
4. Step 4: Simplify right side
   10,100.92x = 111,066,655.50
5. Step 5: Solve for x
   x = 111,066,655.50/10,100.92
6. Step 6: Final answer
   x = 10,995.70