Finding the Fourth Proportional to 13,054.24, 17,903.90 and 12,518.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,054.24 : 17,903.90 = 12,518.56 : x
2. Step 2: Convert to fraction form
   13,054.24/17,903.90 = 12,518.56/x
3. Step 3: Cross multiply
   13,054.24x = 17,903.90 × 12,518.56
4. Step 4: Simplify right side
   13,054.24x = 224,131,046.38
5. Step 5: Solve for x
   x = 224,131,046.38/13,054.24
6. Step 6: Final answer
   x = 17,169.21