Finding the Fourth Proportional to 9,512.38, 13,128.06 and 5,479.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,512.38 : 13,128.06 = 5,479.34 : x
2. Step 2: Convert to fraction form
   9,512.38/13,128.06 = 5,479.34/x
3. Step 3: Cross multiply
   9,512.38x = 13,128.06 × 5,479.34
4. Step 4: Simplify right side
   9,512.38x = 71,933,104.28
5. Step 5: Solve for x
   x = 71,933,104.28/9,512.38
6. Step 6: Final answer
   x = 7,562.06