Finding the Fourth Proportional to 16,870.20, 23,259.18 and 13,834.18

Step by Step Solution

1. Step 1: Write the proportion equation
   16,870.20 : 23,259.18 = 13,834.18 : x
2. Step 2: Convert to fraction form
   16,870.20/23,259.18 = 13,834.18/x
3. Step 3: Cross multiply
   16,870.20x = 23,259.18 × 13,834.18
4. Step 4: Simplify right side
   16,870.20x = 321,771,682.77
5. Step 5: Solve for x
   x = 321,771,682.77/16,870.20
6. Step 6: Final answer
   x = 19,073.38