Finding the Fourth Proportional to 22,086.88, 30,479.60 and 12,015.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,086.88 : 30,479.60 = 12,015.12 : x
2. Step 2: Convert to fraction form
   22,086.88/30,479.60 = 12,015.12/x
3. Step 3: Cross multiply
   22,086.88x = 30,479.60 × 12,015.12
4. Step 4: Simplify right side
   22,086.88x = 366,216,051.55
5. Step 5: Solve for x
   x = 366,216,051.55/22,086.88
6. Step 6: Final answer
   x = 16,580.71