Finding the Fourth Proportional to 13,002.73, 17,939.31 and 7,336.78

Step by Step Solution

1. Step 1: Write the proportion equation
   13,002.73 : 17,939.31 = 7,336.78 : x
2. Step 2: Convert to fraction form
   13,002.73/17,939.31 = 7,336.78/x
3. Step 3: Cross multiply
   13,002.73x = 17,939.31 × 7,336.78
4. Step 4: Simplify right side
   13,002.73x = 131,616,698.46
5. Step 5: Solve for x
   x = 131,616,698.46/13,002.73
6. Step 6: Final answer
   x = 10,122.24