Finding the Fourth Proportional to 22,116.48, 30,514.56 and 12,681.60

Step by Step Solution

1. Step 1: Write the proportion equation
   22,116.48 : 30,514.56 = 12,681.60 : x
2. Step 2: Convert to fraction form
   22,116.48/30,514.56 = 12,681.60/x
3. Step 3: Cross multiply
   22,116.48x = 30,514.56 × 12,681.60
4. Step 4: Simplify right side
   22,116.48x = 386,973,444.10
5. Step 5: Solve for x
   x = 386,973,444.10/22,116.48
6. Step 6: Final answer
   x = 17,497.06