Finding the Fourth Proportional to 18,517.98, 25,554.71 and 10,020.09

Step by Step Solution

1. Step 1: Write the proportion equation
   18,517.98 : 25,554.71 = 10,020.09 : x
2. Step 2: Convert to fraction form
   18,517.98/25,554.71 = 10,020.09/x
3. Step 3: Cross multiply
   18,517.98x = 25,554.71 × 10,020.09
4. Step 4: Simplify right side
   18,517.98x = 256,060,444.02
5. Step 5: Solve for x
   x = 256,060,444.02/18,517.98
6. Step 6: Final answer
   x = 13,827.67