Finding the Fourth Proportional to 16,910.55, 23,336.78 and 10,539.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,910.55 : 23,336.78 = 10,539.72 : x
2. Step 2: Convert to fraction form
   16,910.55/23,336.78 = 10,539.72/x
3. Step 3: Cross multiply
   16,910.55x = 23,336.78 × 10,539.72
4. Step 4: Simplify right side
   16,910.55x = 245,963,126.90
5. Step 5: Solve for x
   x = 245,963,126.90/16,910.55
6. Step 6: Final answer
   x = 14,544.95