Finding the Fourth Proportional to 22,116.42, 30,521.34 and 12,683.16

Step by Step Solution

1. Step 1: Write the proportion equation
   22,116.42 : 30,521.34 = 12,683.16 : x
2. Step 2: Convert to fraction form
   22,116.42/30,521.34 = 12,683.16/x
3. Step 3: Cross multiply
   22,116.42x = 30,521.34 × 12,683.16
4. Step 4: Simplify right side
   22,116.42x = 387,107,038.63
5. Step 5: Solve for x
   x = 387,107,038.63/22,116.42
6. Step 6: Final answer
   x = 17,503.15