Finding the Fourth Proportional to 11,881.18, 17,821.56 and 4,089.82

Step by Step Solution

1. Step 1: Write the proportion equation
   11,881.18 : 17,821.56 = 4,089.82 : x
2. Step 2: Convert to fraction form
   11,881.18/17,821.56 = 4,089.82/x
3. Step 3: Cross multiply
   11,881.18x = 17,821.56 × 4,089.82
4. Step 4: Simplify right side
   11,881.18x = 72,886,972.52
5. Step 5: Solve for x
   x = 72,886,972.52/11,881.18
6. Step 6: Final answer
   x = 6,134.66