Finding the Fourth Proportional to 8,743.36, 12,074.40 and 7,477.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,743.36 : 12,074.40 = 7,477.12 : x
2. Step 2: Convert to fraction form
   8,743.36/12,074.40 = 7,477.12/x
3. Step 3: Cross multiply
   8,743.36x = 12,074.40 × 7,477.12
4. Step 4: Simplify right side
   8,743.36x = 90,281,737.73
5. Step 5: Solve for x
   x = 90,281,737.73/8,743.36
6. Step 6: Final answer
   x = 10,325.75