Finding the Fourth Proportional to 17,878.83, 24,616.31 and 15,746.50

Step by Step Solution

1. Step 1: Write the proportion equation
   17,878.83 : 24,616.31 = 15,746.50 : x
2. Step 2: Convert to fraction form
   17,878.83/24,616.31 = 15,746.50/x
3. Step 3: Cross multiply
   17,878.83x = 24,616.31 × 15,746.50
4. Step 4: Simplify right side
   17,878.83x = 387,620,677.45
5. Step 5: Solve for x
   x = 387,620,677.45/17,878.83
6. Step 6: Final answer
   x = 21,680.43