Finding the Fourth Proportional to 13,054.42, 19,544.37 and 8,663.14

Step by Step Solution

1. Step 1: Write the proportion equation
   13,054.42 : 19,544.37 = 8,663.14 : x
2. Step 2: Convert to fraction form
   13,054.42/19,544.37 = 8,663.14/x
3. Step 3: Cross multiply
   13,054.42x = 19,544.37 × 8,663.14
4. Step 4: Simplify right side
   13,054.42x = 169,315,613.52
5. Step 5: Solve for x
   x = 169,315,613.52/13,054.42
6. Step 6: Final answer
   x = 12,969.98