Finding the Fourth Proportional to 9,030.38, 12,475.67 and 7,217.33

Step by Step Solution

1. Step 1: Write the proportion equation
   9,030.38 : 12,475.67 = 7,217.33 : x
2. Step 2: Convert to fraction form
   9,030.38/12,475.67 = 7,217.33/x
3. Step 3: Cross multiply
   9,030.38x = 12,475.67 × 7,217.33
4. Step 4: Simplify right side
   9,030.38x = 90,040,928.90
5. Step 5: Solve for x
   x = 90,040,928.90/9,030.38
6. Step 6: Final answer
   x = 9,970.90