Finding the Fourth Proportional to 7,126.78, 10,691.31 and 2,196.41

Step by Step Solution

1. Step 1: Write the proportion equation
   7,126.78 : 10,691.31 = 2,196.41 : x
2. Step 2: Convert to fraction form
   7,126.78/10,691.31 = 2,196.41/x
3. Step 3: Cross multiply
   7,126.78x = 10,691.31 × 2,196.41
4. Step 4: Simplify right side
   7,126.78x = 23,482,500.20
5. Step 5: Solve for x
   x = 23,482,500.20/7,126.78
6. Step 6: Final answer
   x = 3,294.97