Finding the Fourth Proportional to 3,697.76, 5,102.78 and 2,126.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,697.76 : 5,102.78 = 2,126.10 : x
2. Step 2: Convert to fraction form
   3,697.76/5,102.78 = 2,126.10/x
3. Step 3: Cross multiply
   3,697.76x = 5,102.78 × 2,126.10
4. Step 4: Simplify right side
   3,697.76x = 10,849,020.56
5. Step 5: Solve for x
   x = 10,849,020.56/3,697.76
6. Step 6: Final answer
   x = 2,933.94