Finding the Fourth Proportional to 6,900.03, 9,504.27 and 5,405.31

Step by Step Solution

1. Step 1: Write the proportion equation
   6,900.03 : 9,504.27 = 5,405.31 : x
2. Step 2: Convert to fraction form
   6,900.03/9,504.27 = 5,405.31/x
3. Step 3: Cross multiply
   6,900.03x = 9,504.27 × 5,405.31
4. Step 4: Simplify right side
   6,900.03x = 51,373,525.67
5. Step 5: Solve for x
   x = 51,373,525.67/6,900.03
6. Step 6: Final answer
   x = 7,445.41