Finding the Fourth Proportional to 9,196.98, 12,692.46 and 5,218.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,196.98 : 12,692.46 = 5,218.12 : x
2. Step 2: Convert to fraction form
   9,196.98/12,692.46 = 5,218.12/x
3. Step 3: Cross multiply
   9,196.98x = 12,692.46 × 5,218.12
4. Step 4: Simplify right side
   9,196.98x = 66,230,779.38
5. Step 5: Solve for x
   x = 66,230,779.38/9,196.98
6. Step 6: Final answer
   x = 7,201.36