Finding the Fourth Proportional to 5,706.72, 8,555.76 and 3,628.80

Step by Step Solution

1. Step 1: Write the proportion equation
   5,706.72 : 8,555.76 = 3,628.80 : x
2. Step 2: Convert to fraction form
   5,706.72/8,555.76 = 3,628.80/x
3. Step 3: Cross multiply
   5,706.72x = 8,555.76 × 3,628.80
4. Step 4: Simplify right side
   5,706.72x = 31,047,141.89
5. Step 5: Solve for x
   x = 31,047,141.89/5,706.72
6. Step 6: Final answer
   x = 5,440.45