Finding the Fourth Proportional to 17,976.60, 24,791.67 and 10,890.72

Step by Step Solution

1. Step 1: Write the proportion equation
   17,976.60 : 24,791.67 = 10,890.72 : x
2. Step 2: Convert to fraction form
   17,976.60/24,791.67 = 10,890.72/x
3. Step 3: Cross multiply
   17,976.60x = 24,791.67 × 10,890.72
4. Step 4: Simplify right side
   17,976.60x = 269,999,136.30
5. Step 5: Solve for x
   x = 269,999,136.30/17,976.60
6. Step 6: Final answer
   x = 15,019.48