Finding the Fourth Proportional to 8,893.34, 12,272.49 and 5,355.86

Step by Step Solution

1. Step 1: Write the proportion equation
   8,893.34 : 12,272.49 = 5,355.86 : x
2. Step 2: Convert to fraction form
   8,893.34/12,272.49 = 5,355.86/x
3. Step 3: Cross multiply
   8,893.34x = 12,272.49 × 5,355.86
4. Step 4: Simplify right side
   8,893.34x = 65,729,738.29
5. Step 5: Solve for x
   x = 65,729,738.29/8,893.34
6. Step 6: Final answer
   x = 7,390.89