Finding the Fourth Proportional to 11,978.11, 17,966.55 and 4,582

Step by Step Solution

1. Step 1: Write the proportion equation
   11,978.11 : 17,966.55 = 4,582 : x
2. Step 2: Convert to fraction form
   11,978.11/17,966.55 = 4,582/x
3. Step 3: Cross multiply
   11,978.11x = 17,966.55 × 4,582
4. Step 4: Simplify right side
   11,978.11x = 82,322,732.10
5. Step 5: Solve for x
   x = 82,322,732.10/11,978.11
6. Step 6: Final answer
   x = 6,872.76