Finding the Fourth Proportional to 8,905.72, 12,287.82 and 5,369.08

Step by Step Solution

1. Step 1: Write the proportion equation
   8,905.72 : 12,287.82 = 5,369.08 : x
2. Step 2: Convert to fraction form
   8,905.72/12,287.82 = 5,369.08/x
3. Step 3: Cross multiply
   8,905.72x = 12,287.82 × 5,369.08
4. Step 4: Simplify right side
   8,905.72x = 65,974,288.61
5. Step 5: Solve for x
   x = 65,974,288.61/8,905.72
6. Step 6: Final answer
   x = 7,408.08