Finding the Fourth Proportional to 23,141.12, 31,934.70 and 12,530.72

Step by Step Solution

1. Step 1: Write the proportion equation
   23,141.12 : 31,934.70 = 12,530.72 : x
2. Step 2: Convert to fraction form
   23,141.12/31,934.70 = 12,530.72/x
3. Step 3: Cross multiply
   23,141.12x = 31,934.70 × 12,530.72
4. Step 4: Simplify right side
   23,141.12x = 400,164,783.98
5. Step 5: Solve for x
   x = 400,164,783.98/23,141.12
6. Step 6: Final answer
   x = 17,292.37