Finding the Fourth Proportional to 22,556.50, 31,128.80 and 12,348.25

Step by Step Solution

1. Step 1: Write the proportion equation
   22,556.50 : 31,128.80 = 12,348.25 : x
2. Step 2: Convert to fraction form
   22,556.50/31,128.80 = 12,348.25/x
3. Step 3: Cross multiply
   22,556.50x = 31,128.80 × 12,348.25
4. Step 4: Simplify right side
   22,556.50x = 384,386,065.04
5. Step 5: Solve for x
   x = 384,386,065.04/22,556.50
6. Step 6: Final answer
   x = 17,041.04