Finding the Fourth Proportional to 11,880.03, 17,820.18 and 3,115.83

Step by Step Solution

1. Step 1: Write the proportion equation
   11,880.03 : 17,820.18 = 3,115.83 : x
2. Step 2: Convert to fraction form
   11,880.03/17,820.18 = 3,115.83/x
3. Step 3: Cross multiply
   11,880.03x = 17,820.18 × 3,115.83
4. Step 4: Simplify right side
   11,880.03x = 55,524,651.45
5. Step 5: Solve for x
   x = 55,524,651.45/11,880.03
6. Step 6: Final answer
   x = 4,673.78