Finding the Fourth Proportional to 12,464.09, 17,190.72 and 7,988.27

Step by Step Solution

1. Step 1: Write the proportion equation
   12,464.09 : 17,190.72 = 7,988.27 : x
2. Step 2: Convert to fraction form
   12,464.09/17,190.72 = 7,988.27/x
3. Step 3: Cross multiply
   12,464.09x = 17,190.72 × 7,988.27
4. Step 4: Simplify right side
   12,464.09x = 137,324,026.90
5. Step 5: Solve for x
   x = 137,324,026.90/12,464.09
6. Step 6: Final answer
   x = 11,017.58