Finding the Fourth Proportional to 22,876.52, 31,570.02 and 12,940.52

Step by Step Solution

1. Step 1: Write the proportion equation
   22,876.52 : 31,570.02 = 12,940.52 : x
2. Step 2: Convert to fraction form
   22,876.52/31,570.02 = 12,940.52/x
3. Step 3: Cross multiply
   22,876.52x = 31,570.02 × 12,940.52
4. Step 4: Simplify right side
   22,876.52x = 408,532,475.21
5. Step 5: Solve for x
   x = 408,532,475.21/22,876.52
6. Step 6: Final answer
   x = 17,858.16