Finding the Fourth Proportional to 12,218.31, 16,854.08 and 7,499.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,218.31 : 16,854.08 = 7,499.25 : x
2. Step 2: Convert to fraction form
   12,218.31/16,854.08 = 7,499.25/x
3. Step 3: Cross multiply
   12,218.31x = 16,854.08 × 7,499.25
4. Step 4: Simplify right side
   12,218.31x = 126,392,921.94
5. Step 5: Solve for x
   x = 126,392,921.94/12,218.31
6. Step 6: Final answer
   x = 10,344.55