Finding the Fourth Proportional to 8,981.36, 12,394.27 and 5,206.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,981.36 : 12,394.27 = 5,206.72 : x
2. Step 2: Convert to fraction form
   8,981.36/12,394.27 = 5,206.72/x
3. Step 3: Cross multiply
   8,981.36x = 12,394.27 × 5,206.72
4. Step 4: Simplify right side
   8,981.36x = 64,533,506.90
5. Step 5: Solve for x
   x = 64,533,506.90/8,981.36
6. Step 6: Final answer
   x = 7,185.27