Finding the Fourth Proportional to 11,910.50, 17,868.24 and 3,591.12

Step by Step Solution

1. Step 1: Write the proportion equation
   11,910.50 : 17,868.24 = 3,591.12 : x
2. Step 2: Convert to fraction form
   11,910.50/17,868.24 = 3,591.12/x
3. Step 3: Cross multiply
   11,910.50x = 17,868.24 × 3,591.12
4. Step 4: Simplify right side
   11,910.50x = 64,166,994.03
5. Step 5: Solve for x
   x = 64,166,994.03/11,910.50
6. Step 6: Final answer
   x = 5,387.43