Finding the Fourth Proportional to 18,139.47, 25,031.10 and 10,180.16

Step by Step Solution

1. Step 1: Write the proportion equation
   18,139.47 : 25,031.10 = 10,180.16 : x
2. Step 2: Convert to fraction form
   18,139.47/25,031.10 = 10,180.16/x
3. Step 3: Cross multiply
   18,139.47x = 25,031.10 × 10,180.16
4. Step 4: Simplify right side
   18,139.47x = 254,820,426.92
5. Step 5: Solve for x
   x = 254,820,426.92/18,139.47
6. Step 6: Final answer
   x = 14,047.84