Finding the Fourth Proportional to 9,918.10, 14,913.60 and 8,314.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,918.10 : 14,913.60 = 8,314.30 : x
2. Step 2: Convert to fraction form
   9,918.10/14,913.60 = 8,314.30/x
3. Step 3: Cross multiply
   9,918.10x = 14,913.60 × 8,314.30
4. Step 4: Simplify right side
   9,918.10x = 123,996,144.48
5. Step 5: Solve for x
   x = 123,996,144.48/9,918.10
6. Step 6: Final answer
   x = 12,502.01