Finding the Fourth Proportional to 22,615.91, 31,213.69 and 12,547.59

Step by Step Solution

1. Step 1: Write the proportion equation
   22,615.91 : 31,213.69 = 12,547.59 : x
2. Step 2: Convert to fraction form
   22,615.91/31,213.69 = 12,547.59/x
3. Step 3: Cross multiply
   22,615.91x = 31,213.69 × 12,547.59
4. Step 4: Simplify right side
   22,615.91x = 391,656,623.52
5. Step 5: Solve for x
   x = 391,656,623.52/22,615.91
6. Step 6: Final answer
   x = 17,317.75