Finding the Fourth Proportional to 22,036.72, 30,422.54 and 16,989.88

Step by Step Solution

1. Step 1: Write the proportion equation
   22,036.72 : 30,422.54 = 16,989.88 : x
2. Step 2: Convert to fraction form
   22,036.72/30,422.54 = 16,989.88/x
3. Step 3: Cross multiply
   22,036.72x = 30,422.54 × 16,989.88
4. Step 4: Simplify right side
   22,036.72x = 516,875,303.90
5. Step 5: Solve for x
   x = 516,875,303.90/22,036.72
6. Step 6: Final answer
   x = 23,455.18