Finding the Fourth Proportional to 10,020.52, 15,017.82 and 9,865

Step by Step Solution

1. Step 1: Write the proportion equation
   10,020.52 : 15,017.82 = 9,865 : x
2. Step 2: Convert to fraction form
   10,020.52/15,017.82 = 9,865/x
3. Step 3: Cross multiply
   10,020.52x = 15,017.82 × 9,865
4. Step 4: Simplify right side
   10,020.52x = 148,150,794.30
5. Step 5: Solve for x
   x = 148,150,794.30/10,020.52
6. Step 6: Final answer
   x = 14,784.74