Finding the Fourth Proportional to 10,903.55, 16,355.52 and 4,240.42

Step by Step Solution

1. Step 1: Write the proportion equation
   10,903.55 : 16,355.52 = 4,240.42 : x
2. Step 2: Convert to fraction form
   10,903.55/16,355.52 = 4,240.42/x
3. Step 3: Cross multiply
   10,903.55x = 16,355.52 × 4,240.42
4. Step 4: Simplify right side
   10,903.55x = 69,354,233.23
5. Step 5: Solve for x
   x = 69,354,233.23/10,903.55
6. Step 6: Final answer
   x = 6,360.71