Finding the Fourth Proportional to 8,747.28, 12,069.09 and 5,343.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,747.28 : 12,069.09 = 5,343.42 : x
2. Step 2: Convert to fraction form
   8,747.28/12,069.09 = 5,343.42/x
3. Step 3: Cross multiply
   8,747.28x = 12,069.09 × 5,343.42
4. Step 4: Simplify right side
   8,747.28x = 64,490,216.89
5. Step 5: Solve for x
   x = 64,490,216.89/8,747.28
6. Step 6: Final answer
   x = 7,372.60