Finding the Fourth Proportional to 9,744.72, 14,609.76 and 3,905.40

Step by Step Solution

1. Step 1: Write the proportion equation
   9,744.72 : 14,609.76 = 3,905.40 : x
2. Step 2: Convert to fraction form
   9,744.72/14,609.76 = 3,905.40/x
3. Step 3: Cross multiply
   9,744.72x = 14,609.76 × 3,905.40
4. Step 4: Simplify right side
   9,744.72x = 57,056,956.70
5. Step 5: Solve for x
   x = 57,056,956.70/9,744.72
6. Step 6: Final answer
   x = 5,855.17