Finding the Fourth Proportional to 16,200.15, 22,356.68 and 9,485.15

Step by Step Solution

1. Step 1: Write the proportion equation
   16,200.15 : 22,356.68 = 9,485.15 : x
2. Step 2: Convert to fraction form
   16,200.15/22,356.68 = 9,485.15/x
3. Step 3: Cross multiply
   16,200.15x = 22,356.68 × 9,485.15
4. Step 4: Simplify right side
   16,200.15x = 212,056,509.88
5. Step 5: Solve for x
   x = 212,056,509.88/16,200.15
6. Step 6: Final answer
   x = 13,089.79