Finding the Fourth Proportional to 19,300.50, 26,616.42 and 12,591.27

Step by Step Solution

1. Step 1: Write the proportion equation
   19,300.50 : 26,616.42 = 12,591.27 : x
2. Step 2: Convert to fraction form
   19,300.50/26,616.42 = 12,591.27/x
3. Step 3: Cross multiply
   19,300.50x = 26,616.42 × 12,591.27
4. Step 4: Simplify right side
   19,300.50x = 335,134,530.65
5. Step 5: Solve for x
   x = 335,134,530.65/19,300.50
6. Step 6: Final answer
   x = 17,364.03