Finding the Fourth Proportional to 22,019.09, 30,386.47 and 11,947.55

Step by Step Solution

1. Step 1: Write the proportion equation
   22,019.09 : 30,386.47 = 11,947.55 : x
2. Step 2: Convert to fraction form
   22,019.09/30,386.47 = 11,947.55/x
3. Step 3: Cross multiply
   22,019.09x = 30,386.47 × 11,947.55
4. Step 4: Simplify right side
   22,019.09x = 363,043,847.57
5. Step 5: Solve for x
   x = 363,043,847.57/22,019.09
6. Step 6: Final answer
   x = 16,487.69