Finding the Fourth Proportional to 6,729.31, 9,255.54 and 5,400.10

Step by Step Solution

1. Step 1: Write the proportion equation
   6,729.31 : 9,255.54 = 5,400.10 : x
2. Step 2: Convert to fraction form
   6,729.31/9,255.54 = 5,400.10/x
3. Step 3: Cross multiply
   6,729.31x = 9,255.54 × 5,400.10
4. Step 4: Simplify right side
   6,729.31x = 49,980,841.55
5. Step 5: Solve for x
   x = 49,980,841.55/6,729.31
6. Step 6: Final answer
   x = 7,427.34