Finding the Fourth Proportional to 13,520.88, 18,663.94 and 10,173.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,520.88 : 18,663.94 = 10,173.42 : x
2. Step 2: Convert to fraction form
   13,520.88/18,663.94 = 10,173.42/x
3. Step 3: Cross multiply
   13,520.88x = 18,663.94 × 10,173.42
4. Step 4: Simplify right side
   13,520.88x = 189,876,100.47
5. Step 5: Solve for x
   x = 189,876,100.47/13,520.88
6. Step 6: Final answer
   x = 14,043.18