Finding the Fourth Proportional to 19,486.71, 26,870.49 and 12,404.07

Step by Step Solution

1. Step 1: Write the proportion equation
   19,486.71 : 26,870.49 = 12,404.07 : x
2. Step 2: Convert to fraction form
   19,486.71/26,870.49 = 12,404.07/x
3. Step 3: Cross multiply
   19,486.71x = 26,870.49 × 12,404.07
4. Step 4: Simplify right side
   19,486.71x = 333,303,438.89
5. Step 5: Solve for x
   x = 333,303,438.89/19,486.71
6. Step 6: Final answer
   x = 17,104.14