Finding the Fourth Proportional to 18,181.96, 25,091.42 and 10,116.25

Step by Step Solution

1. Step 1: Write the proportion equation
   18,181.96 : 25,091.42 = 10,116.25 : x
2. Step 2: Convert to fraction form
   18,181.96/25,091.42 = 10,116.25/x
3. Step 3: Cross multiply
   18,181.96x = 25,091.42 × 10,116.25
4. Step 4: Simplify right side
   18,181.96x = 253,830,964.27
5. Step 5: Solve for x
   x = 253,830,964.27/18,181.96
6. Step 6: Final answer
   x = 13,960.60