Finding the Fourth Proportional to 8,111.17, 11,198.19 and 5,321.53

Step by Step Solution

1. Step 1: Write the proportion equation
   8,111.17 : 11,198.19 = 5,321.53 : x
2. Step 2: Convert to fraction form
   8,111.17/11,198.19 = 5,321.53/x
3. Step 3: Cross multiply
   8,111.17x = 11,198.19 × 5,321.53
4. Step 4: Simplify right side
   8,111.17x = 59,591,504.03
5. Step 5: Solve for x
   x = 59,591,504.03/8,111.17
6. Step 6: Final answer
   x = 7,346.84