Finding the Fourth Proportional to 20,498.27, 28,082.75 and 19,730.39

Step by Step Solution

1. Step 1: Write the proportion equation
   20,498.27 : 28,082.75 = 19,730.39 : x
2. Step 2: Convert to fraction form
   20,498.27/28,082.75 = 19,730.39/x
3. Step 3: Cross multiply
   20,498.27x = 28,082.75 × 19,730.39
4. Step 4: Simplify right side
   20,498.27x = 554,083,370.71
5. Step 5: Solve for x
   x = 554,083,370.71/20,498.27
6. Step 6: Final answer
   x = 27,030.74