Finding the Fourth Proportional to 9,113.42, 12,494.50 and 8,947.35

Step by Step Solution

1. Step 1: Write the proportion equation
   9,113.42 : 12,494.50 = 8,947.35 : x
2. Step 2: Convert to fraction form
   9,113.42/12,494.50 = 8,947.35/x
3. Step 3: Cross multiply
   9,113.42x = 12,494.50 × 8,947.35
4. Step 4: Simplify right side
   9,113.42x = 111,792,642.21
5. Step 5: Solve for x
   x = 111,792,642.21/9,113.42
6. Step 6: Final answer
   x = 12,266.81