Finding the Fourth Proportional to 3,715.72, 5,127.48 and 2,036.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,715.72 : 5,127.48 = 2,036.80 : x
2. Step 2: Convert to fraction form
   3,715.72/5,127.48 = 2,036.80/x
3. Step 3: Cross multiply
   3,715.72x = 5,127.48 × 2,036.80
4. Step 4: Simplify right side
   3,715.72x = 10,443,651.26
5. Step 5: Solve for x
   x = 10,443,651.26/3,715.72
6. Step 6: Final answer
   x = 2,810.67