Finding the Fourth Proportional to 17,878.18, 24,671.89 and 9,920.41

Step by Step Solution

1. Step 1: Write the proportion equation
   17,878.18 : 24,671.89 = 9,920.41 : x
2. Step 2: Convert to fraction form
   17,878.18/24,671.89 = 9,920.41/x
3. Step 3: Cross multiply
   17,878.18x = 24,671.89 × 9,920.41
4. Step 4: Simplify right side
   17,878.18x = 244,755,264.27
5. Step 5: Solve for x
   x = 244,755,264.27/17,878.18
6. Step 6: Final answer
   x = 13,690.17