Finding the Fourth Proportional to 19,499.91, 26,912.88 and 12,804.93

Step by Step Solution

1. Step 1: Write the proportion equation
   19,499.91 : 26,912.88 = 12,804.93 : x
2. Step 2: Convert to fraction form
   19,499.91/26,912.88 = 12,804.93/x
3. Step 3: Cross multiply
   19,499.91x = 26,912.88 × 12,804.93
4. Step 4: Simplify right side
   19,499.91x = 344,617,544.50
5. Step 5: Solve for x
   x = 344,617,544.50/19,499.91
6. Step 6: Final answer
   x = 17,672.78