Finding the Fourth Proportional to 10,784.34, 16,168.23 and 9,685.35

Step by Step Solution

1. Step 1: Write the proportion equation
   10,784.34 : 16,168.23 = 9,685.35 : x
2. Step 2: Convert to fraction form
   10,784.34/16,168.23 = 9,685.35/x
3. Step 3: Cross multiply
   10,784.34x = 16,168.23 × 9,685.35
4. Step 4: Simplify right side
   10,784.34x = 156,594,966.43
5. Step 5: Solve for x
   x = 156,594,966.43/10,784.34
6. Step 6: Final answer
   x = 14,520.59