Finding the Fourth Proportional to 18,796.97, 28,184.51 and 7,111.10

Step by Step Solution

1. Step 1: Write the proportion equation
   18,796.97 : 28,184.51 = 7,111.10 : x
2. Step 2: Convert to fraction form
   18,796.97/28,184.51 = 7,111.10/x
3. Step 3: Cross multiply
   18,796.97x = 28,184.51 × 7,111.10
4. Step 4: Simplify right side
   18,796.97x = 200,422,957.30
5. Step 5: Solve for x
   x = 200,422,957.30/18,796.97
6. Step 6: Final answer
   x = 10,662.51