Finding the Fourth Proportional to 19,870.84, 27,452.82 and 16,918.12

Step by Step Solution

1. Step 1: Write the proportion equation
   19,870.84 : 27,452.82 = 16,918.12 : x
2. Step 2: Convert to fraction form
   19,870.84/27,452.82 = 16,918.12/x
3. Step 3: Cross multiply
   19,870.84x = 27,452.82 × 16,918.12
4. Step 4: Simplify right side
   19,870.84x = 464,450,103.10
5. Step 5: Solve for x
   x = 464,450,103.10/19,870.84
6. Step 6: Final answer
   x = 23,373.45