Finding the Fourth Proportional to 9,113.30, 12,494.33 and 8,947.22

Step by Step Solution

1. Step 1: Write the proportion equation
   9,113.30 : 12,494.33 = 8,947.22 : x
2. Step 2: Convert to fraction form
   9,113.30/12,494.33 = 8,947.22/x
3. Step 3: Cross multiply
   9,113.30x = 12,494.33 × 8,947.22
4. Step 4: Simplify right side
   9,113.30x = 111,789,519.26
5. Step 5: Solve for x
   x = 111,789,519.26/9,113.30
6. Step 6: Final answer
   x = 12,266.63