Finding the Fourth Proportional to 9,320.72, 13,968.36 and 5,154.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,320.72 : 13,968.36 = 5,154.56 : x
2. Step 2: Convert to fraction form
   9,320.72/13,968.36 = 5,154.56/x
3. Step 3: Cross multiply
   9,320.72x = 13,968.36 × 5,154.56
4. Step 4: Simplify right side
   9,320.72x = 72,000,749.72
5. Step 5: Solve for x
   x = 72,000,749.72/9,320.72
6. Step 6: Final answer
   x = 7,724.81