Finding the Fourth Proportional to 7,287.48, 10,055.88 and 4,143

Step by Step Solution

1. Step 1: Write the proportion equation
   7,287.48 : 10,055.88 = 4,143 : x
2. Step 2: Convert to fraction form
   7,287.48/10,055.88 = 4,143/x
3. Step 3: Cross multiply
   7,287.48x = 10,055.88 × 4,143
4. Step 4: Simplify right side
   7,287.48x = 41,661,510.84
5. Step 5: Solve for x
   x = 41,661,510.84/7,287.48
6. Step 6: Final answer
   x = 5,716.86