Finding the Fourth Proportional to 20,498.39, 28,082.88 and 19,730.49

Step by Step Solution

1. Step 1: Write the proportion equation
   20,498.39 : 28,082.88 = 19,730.49 : x
2. Step 2: Convert to fraction form
   20,498.39/28,082.88 = 19,730.49/x
3. Step 3: Cross multiply
   20,498.39x = 28,082.88 × 19,730.49
4. Step 4: Simplify right side
   20,498.39x = 554,088,983.01
5. Step 5: Solve for x
   x = 554,088,983.01/20,498.39
6. Step 6: Final answer
   x = 27,030.86