Finding the Fourth Proportional to 51,983.10, 71,736.69 and 28,109.78

Step by Step Solution

1. Step 1: Write the proportion equation
   51,983.10 : 71,736.69 = 28,109.78 : x
2. Step 2: Convert to fraction form
   51,983.10/71,736.69 = 28,109.78/x
3. Step 3: Cross multiply
   51,983.10x = 71,736.69 × 28,109.78
4. Step 4: Simplify right side
   51,983.10x = 2,016,502,532.33
5. Step 5: Solve for x
   x = 2,016,502,532.33/51,983.10
6. Step 6: Final answer
   x = 38,791.50