Finding the Fourth Proportional to 9,458.31, 13,052.49 and 5,209.23

Step by Step Solution

1. Step 1: Write the proportion equation
   9,458.31 : 13,052.49 = 5,209.23 : x
2. Step 2: Convert to fraction form
   9,458.31/13,052.49 = 5,209.23/x
3. Step 3: Cross multiply
   9,458.31x = 13,052.49 × 5,209.23
4. Step 4: Simplify right side
   9,458.31x = 67,993,422.48
5. Step 5: Solve for x
   x = 67,993,422.48/9,458.31
6. Step 6: Final answer
   x = 7,188.75