Finding the Fourth Proportional to 13,255.98, 18,293.31 and 7,288.03

Step by Step Solution

1. Step 1: Write the proportion equation
   13,255.98 : 18,293.31 = 7,288.03 : x
2. Step 2: Convert to fraction form
   13,255.98/18,293.31 = 7,288.03/x
3. Step 3: Cross multiply
   13,255.98x = 18,293.31 × 7,288.03
4. Step 4: Simplify right side
   13,255.98x = 133,322,214.95
5. Step 5: Solve for x
   x = 133,322,214.95/13,255.98
6. Step 6: Final answer
   x = 10,057.52