Finding the Fourth Proportional to 22,616.21, 31,212.28 and 12,547.89

Step by Step Solution

1. Step 1: Write the proportion equation
   22,616.21 : 31,212.28 = 12,547.89 : x
2. Step 2: Convert to fraction form
   22,616.21/31,212.28 = 12,547.89/x
3. Step 3: Cross multiply
   22,616.21x = 31,212.28 × 12,547.89
4. Step 4: Simplify right side
   22,616.21x = 391,648,256.09
5. Step 5: Solve for x
   x = 391,648,256.09/22,616.21
6. Step 6: Final answer
   x = 17,317.15