Finding the Fourth Proportional to 22,116.40, 30,521.34 and 12,045.15

Step by Step Solution

1. Step 1: Write the proportion equation
   22,116.40 : 30,521.34 = 12,045.15 : x
2. Step 2: Convert to fraction form
   22,116.40/30,521.34 = 12,045.15/x
3. Step 3: Cross multiply
   22,116.40x = 30,521.34 × 12,045.15
4. Step 4: Simplify right side
   22,116.40x = 367,634,118.50
5. Step 5: Solve for x
   x = 367,634,118.50/22,116.40
6. Step 6: Final answer
   x = 16,622.69