Finding the Fourth Proportional to 9,422.97, 13,004.73 and 5,390.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,422.97 : 13,004.73 = 5,390.18 : x
2. Step 2: Convert to fraction form
   9,422.97/13,004.73 = 5,390.18/x
3. Step 3: Cross multiply
   9,422.97x = 13,004.73 × 5,390.18
4. Step 4: Simplify right side
   9,422.97x = 70,097,770.53
5. Step 5: Solve for x
   x = 70,097,770.53/9,422.97
6. Step 6: Final answer
   x = 7,439.03