Finding the Fourth Proportional to 22,970.43, 31,691.27 and 12,897.47

Step by Step Solution

1. Step 1: Write the proportion equation
   22,970.43 : 31,691.27 = 12,897.47 : x
2. Step 2: Convert to fraction form
   22,970.43/31,691.27 = 12,897.47/x
3. Step 3: Cross multiply
   22,970.43x = 31,691.27 × 12,897.47
4. Step 4: Simplify right side
   22,970.43x = 408,737,315.56
5. Step 5: Solve for x
   x = 408,737,315.56/22,970.43
6. Step 6: Final answer
   x = 17,794.06