Finding the Fourth Proportional to 16,753.40, 23,118.78 and 9,200.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,753.40 : 23,118.78 = 9,200.72 : x
2. Step 2: Convert to fraction form
   16,753.40/23,118.78 = 9,200.72/x
3. Step 3: Cross multiply
   16,753.40x = 23,118.78 × 9,200.72
4. Step 4: Simplify right side
   16,753.40x = 212,709,513.82
5. Step 5: Solve for x
   x = 212,709,513.82/16,753.40
6. Step 6: Final answer
   x = 12,696.50