Finding the Fourth Proportional to 9,196.84, 12,691.94 and 5,218.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,196.84 : 12,691.94 = 5,218.12 : x
2. Step 2: Convert to fraction form
   9,196.84/12,691.94 = 5,218.12/x
3. Step 3: Cross multiply
   9,196.84x = 12,691.94 × 5,218.12
4. Step 4: Simplify right side
   9,196.84x = 66,228,085.08
5. Step 5: Solve for x
   x = 66,228,085.08/9,196.84
6. Step 6: Final answer
   x = 7,201.18