Finding the Fourth Proportional to 12,518.54, 17,275.58 and 7,216.43

Step by Step Solution

1. Step 1: Write the proportion equation
   12,518.54 : 17,275.58 = 7,216.43 : x
2. Step 2: Convert to fraction form
   12,518.54/17,275.58 = 7,216.43/x
3. Step 3: Cross multiply
   12,518.54x = 17,275.58 × 7,216.43
4. Step 4: Simplify right side
   12,518.54x = 124,667,891.32
5. Step 5: Solve for x
   x = 124,667,891.32/12,518.54
6. Step 6: Final answer
   x = 9,958.66