Finding the Fourth Proportional to 12,253.59, 16,907.34 and 7,215.97

Step by Step Solution

1. Step 1: Write the proportion equation
   12,253.59 : 16,907.34 = 7,215.97 : x
2. Step 2: Convert to fraction form
   12,253.59/16,907.34 = 7,215.97/x
3. Step 3: Cross multiply
   12,253.59x = 16,907.34 × 7,215.97
4. Step 4: Simplify right side
   12,253.59x = 122,002,858.22
5. Step 5: Solve for x
   x = 122,002,858.22/12,253.59
6. Step 6: Final answer
   x = 9,956.50