Finding the Fourth Proportional to 9,426.40, 13,009.02 and 5,447.68

Step by Step Solution

1. Step 1: Write the proportion equation
   9,426.40 : 13,009.02 = 5,447.68 : x
2. Step 2: Convert to fraction form
   9,426.40/13,009.02 = 5,447.68/x
3. Step 3: Cross multiply
   9,426.40x = 13,009.02 × 5,447.68
4. Step 4: Simplify right side
   9,426.40x = 70,868,978.07
5. Step 5: Solve for x
   x = 70,868,978.07/9,426.40
6. Step 6: Final answer
   x = 7,518.14