Finding the Fourth Proportional to 9,458.30, 13,052.35 and 5,209.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,458.30 : 13,052.35 = 5,209.28 : x
2. Step 2: Convert to fraction form
   9,458.30/13,052.35 = 5,209.28/x
3. Step 3: Cross multiply
   9,458.30x = 13,052.35 × 5,209.28
4. Step 4: Simplify right side
   9,458.30x = 67,993,345.81
5. Step 5: Solve for x
   x = 67,993,345.81/9,458.30
6. Step 6: Final answer
   x = 7,188.75