Finding the Fourth Proportional to 9,674.47, 13,351.89 and 5,426.70

Step by Step Solution

1. Step 1: Write the proportion equation
   9,674.47 : 13,351.89 = 5,426.70 : x
2. Step 2: Convert to fraction form
   9,674.47/13,351.89 = 5,426.70/x
3. Step 3: Cross multiply
   9,674.47x = 13,351.89 × 5,426.70
4. Step 4: Simplify right side
   9,674.47x = 72,456,701.46
5. Step 5: Solve for x
   x = 72,456,701.46/9,674.47
6. Step 6: Final answer
   x = 7,489.48