Finding the Fourth Proportional to 22,472.43, 31,010.91 and 12,905.58

Step by Step Solution

1. Step 1: Write the proportion equation
   22,472.43 : 31,010.91 = 12,905.58 : x
2. Step 2: Convert to fraction form
   22,472.43/31,010.91 = 12,905.58/x
3. Step 3: Cross multiply
   22,472.43x = 31,010.91 × 12,905.58
4. Step 4: Simplify right side
   22,472.43x = 400,213,847.77
5. Step 5: Solve for x
   x = 400,213,847.77/22,472.43
6. Step 6: Final answer
   x = 17,809.11