Finding the Fourth Proportional to 22,624.63, 31,225.74 and 12,556.31

Step by Step Solution

1. Step 1: Write the proportion equation
   22,624.63 : 31,225.74 = 12,556.31 : x
2. Step 2: Convert to fraction form
   22,624.63/31,225.74 = 12,556.31/x
3. Step 3: Cross multiply
   22,624.63x = 31,225.74 × 12,556.31
4. Step 4: Simplify right side
   22,624.63x = 392,079,852.51
5. Step 5: Solve for x
   x = 392,079,852.51/22,624.63
6. Step 6: Final answer
   x = 17,329.78