Finding the Fourth Proportional to 16,798.81, 25,201.86 and 5,111.73

Step by Step Solution

1. Step 1: Write the proportion equation
   16,798.81 : 25,201.86 = 5,111.73 : x
2. Step 2: Convert to fraction form
   16,798.81/25,201.86 = 5,111.73/x
3. Step 3: Cross multiply
   16,798.81x = 25,201.86 × 5,111.73
4. Step 4: Simplify right side
   16,798.81x = 128,825,053.59
5. Step 5: Solve for x
   x = 128,825,053.59/16,798.81
6. Step 6: Final answer
   x = 7,668.70