Finding the Fourth Proportional to 9,196.62, 12,691.68 and 5,218.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,196.62 : 12,691.68 = 5,218.50 : x
2. Step 2: Convert to fraction form
   9,196.62/12,691.68 = 5,218.50/x
3. Step 3: Cross multiply
   9,196.62x = 12,691.68 × 5,218.50
4. Step 4: Simplify right side
   9,196.62x = 66,231,532.08
5. Step 5: Solve for x
   x = 66,231,532.08/9,196.62
6. Step 6: Final answer
   x = 7,201.73