Finding the Fourth Proportional to 9,170.47, 12,626.91 and 7,162.00

Step by Step Solution

1. Step 1: Write the proportion equation
   9,170.47 : 12,626.91 = 7,162.00 : x
2. Step 2: Convert to fraction form
   9,170.47/12,626.91 = 7,162.00/x
3. Step 3: Cross multiply
   9,170.47x = 12,626.91 × 7,162.00
4. Step 4: Simplify right side
   9,170.47x = 90,433,928.10
5. Step 5: Solve for x
   x = 90,433,928.10/9,170.47
6. Step 6: Final answer
   x = 9,861.43