Finding the Fourth Proportional to 17,711.40, 24,444.42 and 13,455.48

Step by Step Solution

1. Step 1: Write the proportion equation
   17,711.40 : 24,444.42 = 13,455.48 : x
2. Step 2: Convert to fraction form
   17,711.40/24,444.42 = 13,455.48/x
3. Step 3: Cross multiply
   17,711.40x = 24,444.42 × 13,455.48
4. Step 4: Simplify right side
   17,711.40x = 328,911,404.42
5. Step 5: Solve for x
   x = 328,911,404.42/17,711.40
6. Step 6: Final answer
   x = 18,570.60