Finding the Fourth Proportional to 7,323.54, 10,986.38 and 2,128.74

Step by Step Solution

1. Step 1: Write the proportion equation
   7,323.54 : 10,986.38 = 2,128.74 : x
2. Step 2: Convert to fraction form
   7,323.54/10,986.38 = 2,128.74/x
3. Step 3: Cross multiply
   7,323.54x = 10,986.38 × 2,128.74
4. Step 4: Simplify right side
   7,323.54x = 23,387,146.56
5. Step 5: Solve for x
   x = 23,387,146.56/7,323.54
6. Step 6: Final answer
   x = 3,193.42