Finding the Fourth Proportional to 16,087.20, 22,591.20 and 16,087.20

Step by Step Solution

1. Step 1: Write the proportion equation
   16,087.20 : 22,591.20 = 16,087.20 : x
2. Step 2: Convert to fraction form
   16,087.20/22,591.20 = 16,087.20/x
3. Step 3: Cross multiply
   16,087.20x = 22,591.20 × 16,087.20
4. Step 4: Simplify right side
   16,087.20x = 363,429,152.64
5. Step 5: Solve for x
   x = 363,429,152.64/16,087.20
6. Step 6: Final answer
   x = 22,591.20