Finding the Fourth Proportional to 3,939.48, 5,435.50 and 2,503.32

Step by Step Solution

1. Step 1: Write the proportion equation
   3,939.48 : 5,435.50 = 2,503.32 : x
2. Step 2: Convert to fraction form
   3,939.48/5,435.50 = 2,503.32/x
3. Step 3: Cross multiply
   3,939.48x = 5,435.50 × 2,503.32
4. Step 4: Simplify right side
   3,939.48x = 13,606,795.86
5. Step 5: Solve for x
   x = 13,606,795.86/3,939.48
6. Step 6: Final answer
   x = 3,453.96