Finding the Fourth Proportional to 18,499.66, 25,529.61 and 10,116.34

Step by Step Solution

1. Step 1: Write the proportion equation
   18,499.66 : 25,529.61 = 10,116.34 : x
2. Step 2: Convert to fraction form
   18,499.66/25,529.61 = 10,116.34/x
3. Step 3: Cross multiply
   18,499.66x = 25,529.61 × 10,116.34
4. Step 4: Simplify right side
   18,499.66x = 258,266,214.83
5. Step 5: Solve for x
   x = 258,266,214.83/18,499.66
6. Step 6: Final answer
   x = 13,960.59