Finding the Fourth Proportional to 19,019.83, 28,522.44 and 13,158.67

Step by Step Solution

1. Step 1: Write the proportion equation
   19,019.83 : 28,522.44 = 13,158.67 : x
2. Step 2: Convert to fraction form
   19,019.83/28,522.44 = 13,158.67/x
3. Step 3: Cross multiply
   19,019.83x = 28,522.44 × 13,158.67
4. Step 4: Simplify right side
   19,019.83x = 375,317,375.55
5. Step 5: Solve for x
   x = 375,317,375.55/19,019.83
6. Step 6: Final answer
   x = 19,732.95