Finding the Fourth Proportional to 3,632.16, 5,011.56 and 2,139.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,632.16 : 5,011.56 = 2,139.60 : x
2. Step 2: Convert to fraction form
   3,632.16/5,011.56 = 2,139.60/x
3. Step 3: Cross multiply
   3,632.16x = 5,011.56 × 2,139.60
4. Step 4: Simplify right side
   3,632.16x = 10,722,733.78
5. Step 5: Solve for x
   x = 10,722,733.78/3,632.16
6. Step 6: Final answer
   x = 2,952.16