Finding the Fourth Proportional to 18,139.86, 25,031.29 and 10,180.53

Step by Step Solution

1. Step 1: Write the proportion equation
   18,139.86 : 25,031.29 = 10,180.53 : x
2. Step 2: Convert to fraction form
   18,139.86/25,031.29 = 10,180.53/x
3. Step 3: Cross multiply
   18,139.86x = 25,031.29 × 10,180.53
4. Step 4: Simplify right side
   18,139.86x = 254,831,798.78
5. Step 5: Solve for x
   x = 254,831,798.78/18,139.86
6. Step 6: Final answer
   x = 14,048.17