Finding the Fourth Proportional to 11,877.27, 17,820.21 and 5,557.73

Step by Step Solution

1. Step 1: Write the proportion equation
   11,877.27 : 17,820.21 = 5,557.73 : x
2. Step 2: Convert to fraction form
   11,877.27/17,820.21 = 5,557.73/x
3. Step 3: Cross multiply
   11,877.27x = 17,820.21 × 5,557.73
4. Step 4: Simplify right side
   11,877.27x = 99,039,915.72
5. Step 5: Solve for x
   x = 99,039,915.72/11,877.27
6. Step 6: Final answer
   x = 8,338.61