Finding the Fourth Proportional to 13,013.25, 17,960.72 and 7,424.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,013.25 : 17,960.72 = 7,424.25 : x
2. Step 2: Convert to fraction form
   13,013.25/17,960.72 = 7,424.25/x
3. Step 3: Cross multiply
   13,013.25x = 17,960.72 × 7,424.25
4. Step 4: Simplify right side
   13,013.25x = 133,344,838.34
5. Step 5: Solve for x
   x = 133,344,838.34/13,013.25
6. Step 6: Final answer
   x = 10,246.85