Finding the Fourth Proportional to 16,802.52, 23,190.72 and 11,137.57

Step by Step Solution

1. Step 1: Write the proportion equation
   16,802.52 : 23,190.72 = 11,137.57 : x
2. Step 2: Convert to fraction form
   16,802.52/23,190.72 = 11,137.57/x
3. Step 3: Cross multiply
   16,802.52x = 23,190.72 × 11,137.57
4. Step 4: Simplify right side
   16,802.52x = 258,288,267.35
5. Step 5: Solve for x
   x = 258,288,267.35/16,802.52
6. Step 6: Final answer
   x = 15,372.00