Finding the Fourth Proportional to 9,290.30, 12,806.04 and 7,043.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,290.30 : 12,806.04 = 7,043.18 : x
2. Step 2: Convert to fraction form
   9,290.30/12,806.04 = 7,043.18/x
3. Step 3: Cross multiply
   9,290.30x = 12,806.04 × 7,043.18
4. Step 4: Simplify right side
   9,290.30x = 90,195,244.81
5. Step 5: Solve for x
   x = 90,195,244.81/9,290.30
6. Step 6: Final answer
   x = 9,708.54