Finding the Fourth Proportional to 18,499.16, 25,530.58 and 10,116.92

Step by Step Solution

1. Step 1: Write the proportion equation
   18,499.16 : 25,530.58 = 10,116.92 : x
2. Step 2: Convert to fraction form
   18,499.16/25,530.58 = 10,116.92/x
3. Step 3: Cross multiply
   18,499.16x = 25,530.58 × 10,116.92
4. Step 4: Simplify right side
   18,499.16x = 258,290,835.41
5. Step 5: Solve for x
   x = 258,290,835.41/18,499.16
6. Step 6: Final answer
   x = 13,962.30