Finding the Fourth Proportional to 10,900.24, 16,347.12 and 3,504.40

Step by Step Solution

1. Step 1: Write the proportion equation
   10,900.24 : 16,347.12 = 3,504.40 : x
2. Step 2: Convert to fraction form
   10,900.24/16,347.12 = 3,504.40/x
3. Step 3: Cross multiply
   10,900.24x = 16,347.12 × 3,504.40
4. Step 4: Simplify right side
   10,900.24x = 57,286,847.33
5. Step 5: Solve for x
   x = 57,286,847.33/10,900.24
6. Step 6: Final answer
   x = 5,255.56