Finding the Fourth Proportional to 20,105.55, 30,124.14 and 13,074.82

Step by Step Solution

1. Step 1: Write the proportion equation
   20,105.55 : 30,124.14 = 13,074.82 : x
2. Step 2: Convert to fraction form
   20,105.55/30,124.14 = 13,074.82/x
3. Step 3: Cross multiply
   20,105.55x = 30,124.14 × 13,074.82
4. Step 4: Simplify right side
   20,105.55x = 393,867,583.81
5. Step 5: Solve for x
   x = 393,867,583.81/20,105.55
6. Step 6: Final answer
   x = 19,589.99