Finding the Fourth Proportional to 23,216.20, 32,047.50 and 15,667

Step by Step Solution

1. Step 1: Write the proportion equation
   23,216.20 : 32,047.50 = 15,667 : x
2. Step 2: Convert to fraction form
   23,216.20/32,047.50 = 15,667/x
3. Step 3: Cross multiply
   23,216.20x = 32,047.50 × 15,667
4. Step 4: Simplify right side
   23,216.20x = 502,088,182.50
5. Step 5: Solve for x
   x = 502,088,182.50/23,216.20
6. Step 6: Final answer
   x = 21,626.63