Finding the Fourth Proportional to 19,949.88, 27,510.38 and 13,145.67

Step by Step Solution

1. Step 1: Write the proportion equation
   19,949.88 : 27,510.38 = 13,145.67 : x
2. Step 2: Convert to fraction form
   19,949.88/27,510.38 = 13,145.67/x
3. Step 3: Cross multiply
   19,949.88x = 27,510.38 × 13,145.67
4. Step 4: Simplify right side
   19,949.88x = 361,642,380.10
5. Step 5: Solve for x
   x = 361,642,380.10/19,949.88
6. Step 6: Final answer
   x = 18,127.55