Finding the Fourth Proportional to 20,498.48, 28,103.39 and 20,124.81

Step by Step Solution

1. Step 1: Write the proportion equation
   20,498.48 : 28,103.39 = 20,124.81 : x
2. Step 2: Convert to fraction form
   20,498.48/28,103.39 = 20,124.81/x
3. Step 3: Cross multiply
   20,498.48x = 28,103.39 × 20,124.81
4. Step 4: Simplify right side
   20,498.48x = 565,575,283.48
5. Step 5: Solve for x
   x = 565,575,283.48/20,498.48
6. Step 6: Final answer
   x = 27,591.09