Finding the Fourth Proportional to 12,419.12, 17,144.73 and 9,580.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,419.12 : 17,144.73 = 9,580.12 : x
2. Step 2: Convert to fraction form
   12,419.12/17,144.73 = 9,580.12/x
3. Step 3: Cross multiply
   12,419.12x = 17,144.73 × 9,580.12
4. Step 4: Simplify right side
   12,419.12x = 164,248,570.77
5. Step 5: Solve for x
   x = 164,248,570.77/12,419.12
6. Step 6: Final answer
   x = 13,225.46