Finding the Fourth Proportional to 7,391.76, 10,196.28 and 5,400

Step by Step Solution

1. Step 1: Write the proportion equation
   7,391.76 : 10,196.28 = 5,400 : x
2. Step 2: Convert to fraction form
   7,391.76/10,196.28 = 5,400/x
3. Step 3: Cross multiply
   7,391.76x = 10,196.28 × 5,400
4. Step 4: Simplify right side
   7,391.76x = 55,059,912
5. Step 5: Solve for x
   x = 55,059,912/7,391.76
6. Step 6: Final answer
   x = 7,448.82