Finding the Fourth Proportional to 3,715.47, 5,570.78 and 2,072.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,715.47 : 5,570.78 = 2,072.18 : x
2. Step 2: Convert to fraction form
   3,715.47/5,570.78 = 2,072.18/x
3. Step 3: Cross multiply
   3,715.47x = 5,570.78 × 2,072.18
4. Step 4: Simplify right side
   3,715.47x = 11,543,662.47
5. Step 5: Solve for x
   x = 11,543,662.47/3,715.47
6. Step 6: Final answer
   x = 3,106.92