Finding the Fourth Proportional to 23,160.07, 31,960.69 and 12,549.79

Step by Step Solution

1. Step 1: Write the proportion equation
   23,160.07 : 31,960.69 = 12,549.79 : x
2. Step 2: Convert to fraction form
   23,160.07/31,960.69 = 12,549.79/x
3. Step 3: Cross multiply
   23,160.07x = 31,960.69 × 12,549.79
4. Step 4: Simplify right side
   23,160.07x = 401,099,947.76
5. Step 5: Solve for x
   x = 401,099,947.76/23,160.07
6. Step 6: Final answer
   x = 17,318.60