Finding the Fourth Proportional to 16,604.30, 22,890.12 and 13,061.36

Step by Step Solution

1. Step 1: Write the proportion equation
   16,604.30 : 22,890.12 = 13,061.36 : x
2. Step 2: Convert to fraction form
   16,604.30/22,890.12 = 13,061.36/x
3. Step 3: Cross multiply
   16,604.30x = 22,890.12 × 13,061.36
4. Step 4: Simplify right side
   16,604.30x = 298,976,097.76
5. Step 5: Solve for x
   x = 298,976,097.76/16,604.30
6. Step 6: Final answer
   x = 18,005.94