Finding the Fourth Proportional to 5,300.56, 7,940.96 and 2,664.96

Step by Step Solution

1. Step 1: Write the proportion equation
   5,300.56 : 7,940.96 = 2,664.96 : x
2. Step 2: Convert to fraction form
   5,300.56/7,940.96 = 2,664.96/x
3. Step 3: Cross multiply
   5,300.56x = 7,940.96 × 2,664.96
4. Step 4: Simplify right side
   5,300.56x = 21,162,340.76
5. Step 5: Solve for x
   x = 21,162,340.76/5,300.56
6. Step 6: Final answer
   x = 3,992.47