Finding the Fourth Proportional to 7,196.12, 9,918.42 and 5,072.52

Step by Step Solution

1. Step 1: Write the proportion equation
   7,196.12 : 9,918.42 = 5,072.52 : x
2. Step 2: Convert to fraction form
   7,196.12/9,918.42 = 5,072.52/x
3. Step 3: Cross multiply
   7,196.12x = 9,918.42 × 5,072.52
4. Step 4: Simplify right side
   7,196.12x = 50,311,383.82
5. Step 5: Solve for x
   x = 50,311,383.82/7,196.12
6. Step 6: Final answer
   x = 6,991.46