Finding the Fourth Proportional to 12,505.49, 18,767.47 and 10,069.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,505.49 : 18,767.47 = 10,069.72 : x
2. Step 2: Convert to fraction form
   12,505.49/18,767.47 = 10,069.72/x
3. Step 3: Cross multiply
   12,505.49x = 18,767.47 × 10,069.72
4. Step 4: Simplify right side
   12,505.49x = 188,983,095.92
5. Step 5: Solve for x
   x = 188,983,095.92/12,505.49
6. Step 6: Final answer
   x = 15,112.01