Finding the Fourth Proportional to 12,308.14, 16,994.91 and 9,910.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,308.14 : 16,994.91 = 9,910.50 : x
2. Step 2: Convert to fraction form
   12,308.14/16,994.91 = 9,910.50/x
3. Step 3: Cross multiply
   12,308.14x = 16,994.91 × 9,910.50
4. Step 4: Simplify right side
   12,308.14x = 168,428,055.56
5. Step 5: Solve for x
   x = 168,428,055.56/12,308.14
6. Step 6: Final answer
   x = 13,684.28