Finding the Fourth Proportional to 8,287.34, 12,411.86 and 4,993.16

Step by Step Solution

1. Step 1: Write the proportion equation
   8,287.34 : 12,411.86 = 4,993.16 : x
2. Step 2: Convert to fraction form
   8,287.34/12,411.86 = 4,993.16/x
3. Step 3: Cross multiply
   8,287.34x = 12,411.86 × 4,993.16
4. Step 4: Simplify right side
   8,287.34x = 61,974,315.85
5. Step 5: Solve for x
   x = 61,974,315.85/8,287.34
6. Step 6: Final answer
   x = 7,478.20