Finding the Fourth Proportional to 9,434.38, 13,018.88 and 5,455.22

Step by Step Solution

1. Step 1: Write the proportion equation
   9,434.38 : 13,018.88 = 5,455.22 : x
2. Step 2: Convert to fraction form
   9,434.38/13,018.88 = 5,455.22/x
3. Step 3: Cross multiply
   9,434.38x = 13,018.88 × 5,455.22
4. Step 4: Simplify right side
   9,434.38x = 71,020,854.55
5. Step 5: Solve for x
   x = 71,020,854.55/9,434.38
6. Step 6: Final answer
   x = 7,527.88