Finding the Fourth Proportional to 10,584.78, 15,877.18 and 2,687.89

Step by Step Solution

1. Step 1: Write the proportion equation
   10,584.78 : 15,877.18 = 2,687.89 : x
2. Step 2: Convert to fraction form
   10,584.78/15,877.18 = 2,687.89/x
3. Step 3: Cross multiply
   10,584.78x = 15,877.18 × 2,687.89
4. Step 4: Simplify right side
   10,584.78x = 42,676,093.50
5. Step 5: Solve for x
   x = 42,676,093.50/10,584.78
6. Step 6: Final answer
   x = 4,031.84