Finding the Fourth Proportional to 11,910.48, 17,867.42 and 3,903.53

Step by Step Solution

1. Step 1: Write the proportion equation
   11,910.48 : 17,867.42 = 3,903.53 : x
2. Step 2: Convert to fraction form
   11,910.48/17,867.42 = 3,903.53/x
3. Step 3: Cross multiply
   11,910.48x = 17,867.42 × 3,903.53
4. Step 4: Simplify right side
   11,910.48x = 69,746,066.53
5. Step 5: Solve for x
   x = 69,746,066.53/11,910.48
6. Step 6: Final answer
   x = 5,855.86