Finding the Fourth Proportional to 22,839.67, 31,519.40 and 12,769.25

Step by Step Solution

1. Step 1: Write the proportion equation
   22,839.67 : 31,519.40 = 12,769.25 : x
2. Step 2: Convert to fraction form
   22,839.67/31,519.40 = 12,769.25/x
3. Step 3: Cross multiply
   22,839.67x = 31,519.40 × 12,769.25
4. Step 4: Simplify right side
   22,839.67x = 402,478,877.01
5. Step 5: Solve for x
   x = 402,478,877.01/22,839.67
6. Step 6: Final answer
   x = 17,621.92