Finding the Fourth Proportional to 10,418.72, 14,377.68 and 5,702.88

Step by Step Solution

1. Step 1: Write the proportion equation
   10,418.72 : 14,377.68 = 5,702.88 : x
2. Step 2: Convert to fraction form
   10,418.72/14,377.68 = 5,702.88/x
3. Step 3: Cross multiply
   10,418.72x = 14,377.68 × 5,702.88
4. Step 4: Simplify right side
   10,418.72x = 81,994,183.72
5. Step 5: Solve for x
   x = 81,994,183.72/10,418.72
6. Step 6: Final answer
   x = 7,869.89