Finding the Fourth Proportional to 23,184.38, 31,971.15 and 20,624.18

Step by Step Solution

1. Step 1: Write the proportion equation
   23,184.38 : 31,971.15 = 20,624.18 : x
2. Step 2: Convert to fraction form
   23,184.38/31,971.15 = 20,624.18/x
3. Step 3: Cross multiply
   23,184.38x = 31,971.15 × 20,624.18
4. Step 4: Simplify right side
   23,184.38x = 659,378,592.55
5. Step 5: Solve for x
   x = 659,378,592.55/23,184.38
6. Step 6: Final answer
   x = 28,440.65