Finding the Fourth Proportional to 3,700.18, 5,106.16 and 2,021.59

Step by Step Solution

1. Step 1: Write the proportion equation
   3,700.18 : 5,106.16 = 2,021.59 : x
2. Step 2: Convert to fraction form
   3,700.18/5,106.16 = 2,021.59/x
3. Step 3: Cross multiply
   3,700.18x = 5,106.16 × 2,021.59
4. Step 4: Simplify right side
   3,700.18x = 10,322,530.81
5. Step 5: Solve for x
   x = 10,322,530.81/3,700.18
6. Step 6: Final answer
   x = 2,789.74