Finding the Fourth Proportional to 18,495, 25,523.10 and 10,111.50

Step by Step Solution

1. Step 1: Write the proportion equation
   18,495 : 25,523.10 = 10,111.50 : x
2. Step 2: Convert to fraction form
   18,495/25,523.10 = 10,111.50/x
3. Step 3: Cross multiply
   18,495x = 25,523.10 × 10,111.50
4. Step 4: Simplify right side
   18,495x = 258,076,825.65
5. Step 5: Solve for x
   x = 258,076,825.65/18,495
6. Step 6: Final answer
   x = 13,953.87