Finding the Fourth Proportional to 11,891.82, 17,839.53 and 4,098.78

Step by Step Solution

1. Step 1: Write the proportion equation
   11,891.82 : 17,839.53 = 4,098.78 : x
2. Step 2: Convert to fraction form
   11,891.82/17,839.53 = 4,098.78/x
3. Step 3: Cross multiply
   11,891.82x = 17,839.53 × 4,098.78
4. Step 4: Simplify right side
   11,891.82x = 73,120,308.77
5. Step 5: Solve for x
   x = 73,120,308.77/11,891.82
6. Step 6: Final answer
   x = 6,148.79