Finding the Fourth Proportional to 18,139.10, 25,034.31 and 10,181.30

Step by Step Solution

1. Step 1: Write the proportion equation
   18,139.10 : 25,034.31 = 10,181.30 : x
2. Step 2: Convert to fraction form
   18,139.10/25,034.31 = 10,181.30/x
3. Step 3: Cross multiply
   18,139.10x = 25,034.31 × 10,181.30
4. Step 4: Simplify right side
   18,139.10x = 254,881,695.23
5. Step 5: Solve for x
   x = 254,881,695.23/18,139.10
6. Step 6: Final answer
   x = 14,051.51