Finding the Fourth Proportional to 9,674.76, 13,351.28 and 5,426.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,674.76 : 13,351.28 = 5,426.72 : x
2. Step 2: Convert to fraction form
   9,674.76/13,351.28 = 5,426.72/x
3. Step 3: Cross multiply
   9,674.76x = 13,351.28 × 5,426.72
4. Step 4: Simplify right side
   9,674.76x = 72,453,658.20
5. Step 5: Solve for x
   x = 72,453,658.20/9,674.76
6. Step 6: Final answer
   x = 7,488.94