Finding the Fourth Proportional to 22,528.26, 31,089.78 and 12,458.34

Step by Step Solution

1. Step 1: Write the proportion equation
   22,528.26 : 31,089.78 = 12,458.34 : x
2. Step 2: Convert to fraction form
   22,528.26/31,089.78 = 12,458.34/x
3. Step 3: Cross multiply
   22,528.26x = 31,089.78 × 12,458.34
4. Step 4: Simplify right side
   22,528.26x = 387,327,049.77
5. Step 5: Solve for x
   x = 387,327,049.77/22,528.26
6. Step 6: Final answer
   x = 17,192.94