Finding the Fourth Proportional to 8,981.96, 12,395.78 and 5,206.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,981.96 : 12,395.78 = 5,206.12 : x
2. Step 2: Convert to fraction form
   8,981.96/12,395.78 = 5,206.12/x
3. Step 3: Cross multiply
   8,981.96x = 12,395.78 × 5,206.12
4. Step 4: Simplify right side
   8,981.96x = 64,533,918.17
5. Step 5: Solve for x
   x = 64,533,918.17/8,981.96
6. Step 6: Final answer
   x = 7,184.84