Finding the Fourth Proportional to 22,615.35, 31,211.04 and 12,547

Step by Step Solution

1. Step 1: Write the proportion equation
   22,615.35 : 31,211.04 = 12,547 : x
2. Step 2: Convert to fraction form
   22,615.35/31,211.04 = 12,547/x
3. Step 3: Cross multiply
   22,615.35x = 31,211.04 × 12,547
4. Step 4: Simplify right side
   22,615.35x = 391,604,918.88
5. Step 5: Solve for x
   x = 391,604,918.88/22,615.35
6. Step 6: Final answer
   x = 17,315.89