Finding the Fourth Proportional to 19,618.03, 27,072.86 and 10,665.53

Step by Step Solution

1. Step 1: Write the proportion equation
   19,618.03 : 27,072.86 = 10,665.53 : x
2. Step 2: Convert to fraction form
   19,618.03/27,072.86 = 10,665.53/x
3. Step 3: Cross multiply
   19,618.03x = 27,072.86 × 10,665.53
4. Step 4: Simplify right side
   19,618.03x = 288,746,400.52
5. Step 5: Solve for x
   x = 288,746,400.52/19,618.03
6. Step 6: Final answer
   x = 14,718.42