Finding the Fourth Proportional to 9,815.50, 14,725.68 and 2,890

Step by Step Solution

1. Step 1: Write the proportion equation
   9,815.50 : 14,725.68 = 2,890 : x
2. Step 2: Convert to fraction form
   9,815.50/14,725.68 = 2,890/x
3. Step 3: Cross multiply
   9,815.50x = 14,725.68 × 2,890
4. Step 4: Simplify right side
   9,815.50x = 42,557,215.20
5. Step 5: Solve for x
   x = 42,557,215.20/9,815.50
6. Step 6: Final answer
   x = 4,335.72