Finding the Fourth Proportional to 9,190.68, 12,689.22 and 7,062.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,190.68 : 12,689.22 = 7,062.42 : x
2. Step 2: Convert to fraction form
   9,190.68/12,689.22 = 7,062.42/x
3. Step 3: Cross multiply
   9,190.68x = 12,689.22 × 7,062.42
4. Step 4: Simplify right side
   9,190.68x = 89,616,601.11
5. Step 5: Solve for x
   x = 89,616,601.11/9,190.68
6. Step 6: Final answer
   x = 9,750.81