Finding the Fourth Proportional to 13,255.91, 18,293.17 and 7,287.68

Step by Step Solution

1. Step 1: Write the proportion equation
   13,255.91 : 18,293.17 = 7,287.68 : x
2. Step 2: Convert to fraction form
   13,255.91/18,293.17 = 7,287.68/x
3. Step 3: Cross multiply
   13,255.91x = 18,293.17 × 7,287.68
4. Step 4: Simplify right side
   13,255.91x = 133,314,732.71
5. Step 5: Solve for x
   x = 133,314,732.71/13,255.91
6. Step 6: Final answer
   x = 10,057.00