Finding the Fourth Proportional to 13,007.39, 17,951.22 and 7,628.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,007.39 : 17,951.22 = 7,628.18 : x
2. Step 2: Convert to fraction form
   13,007.39/17,951.22 = 7,628.18/x
3. Step 3: Cross multiply
   13,007.39x = 17,951.22 × 7,628.18
4. Step 4: Simplify right side
   13,007.39x = 136,935,047.62
5. Step 5: Solve for x
   x = 136,935,047.62/13,007.39
6. Step 6: Final answer
   x = 10,527.48