Finding the Fourth Proportional to 15,456.34, 21,327.81 and 9,167.50

Step by Step Solution

1. Step 1: Write the proportion equation
   15,456.34 : 21,327.81 = 9,167.50 : x
2. Step 2: Convert to fraction form
   15,456.34/21,327.81 = 9,167.50/x
3. Step 3: Cross multiply
   15,456.34x = 21,327.81 × 9,167.50
4. Step 4: Simplify right side
   15,456.34x = 195,522,698.18
5. Step 5: Solve for x
   x = 195,522,698.18/15,456.34
6. Step 6: Final answer
   x = 12,650.00