Finding the Fourth Proportional to 7,323.04, 10,986.24 and 2,128.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,323.04 : 10,986.24 = 2,128.72 : x
2. Step 2: Convert to fraction form
   7,323.04/10,986.24 = 2,128.72/x
3. Step 3: Cross multiply
   7,323.04x = 10,986.24 × 2,128.72
4. Step 4: Simplify right side
   7,323.04x = 23,386,628.81
5. Step 5: Solve for x
   x = 23,386,628.81/7,323.04
6. Step 6: Final answer
   x = 3,193.57