Finding the Fourth Proportional to 9,914.10, 14,907.60 and 8,310.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,914.10 : 14,907.60 = 8,310.30 : x
2. Step 2: Convert to fraction form
   9,914.10/14,907.60 = 8,310.30/x
3. Step 3: Cross multiply
   9,914.10x = 14,907.60 × 8,310.30
4. Step 4: Simplify right side
   9,914.10x = 123,886,628.28
5. Step 5: Solve for x
   x = 123,886,628.28/9,914.10
6. Step 6: Final answer
   x = 12,496.00