Finding the Fourth Proportional to 18,654.51, 25,742.59 and 10,156.49

Step by Step Solution

1. Step 1: Write the proportion equation
   18,654.51 : 25,742.59 = 10,156.49 : x
2. Step 2: Convert to fraction form
   18,654.51/25,742.59 = 10,156.49/x
3. Step 3: Cross multiply
   18,654.51x = 25,742.59 × 10,156.49
4. Step 4: Simplify right side
   18,654.51x = 261,454,300.34
5. Step 5: Solve for x
   x = 261,454,300.34/18,654.51
6. Step 6: Final answer
   x = 14,015.61