Finding the Fourth Proportional to 18,111.31, 24,994.81 and 10,154.05

Step by Step Solution

1. Step 1: Write the proportion equation
   18,111.31 : 24,994.81 = 10,154.05 : x
2. Step 2: Convert to fraction form
   18,111.31/24,994.81 = 10,154.05/x
3. Step 3: Cross multiply
   18,111.31x = 24,994.81 × 10,154.05
4. Step 4: Simplify right side
   18,111.31x = 253,798,550.48
5. Step 5: Solve for x
   x = 253,798,550.48/18,111.31
6. Step 6: Final answer
   x = 14,013.26