Finding the Fourth Proportional to 5,304.96, 7,320.72 and 2,947.05

Step by Step Solution

1. Step 1: Write the proportion equation
   5,304.96 : 7,320.72 = 2,947.05 : x
2. Step 2: Convert to fraction form
   5,304.96/7,320.72 = 2,947.05/x
3. Step 3: Cross multiply
   5,304.96x = 7,320.72 × 2,947.05
4. Step 4: Simplify right side
   5,304.96x = 21,574,527.88
5. Step 5: Solve for x
   x = 21,574,527.88/5,304.96
6. Step 6: Final answer
   x = 4,066.86