Finding the Fourth Proportional to 17,877.98, 24,671.45 and 9,920.27

Step by Step Solution

1. Step 1: Write the proportion equation
   17,877.98 : 24,671.45 = 9,920.27 : x
2. Step 2: Convert to fraction form
   17,877.98/24,671.45 = 9,920.27/x
3. Step 3: Cross multiply
   17,877.98x = 24,671.45 × 9,920.27
4. Step 4: Simplify right side
   17,877.98x = 244,747,531.77
5. Step 5: Solve for x
   x = 244,747,531.77/17,877.98
6. Step 6: Final answer
   x = 13,689.89