Finding the Fourth Proportional to 16,909.89, 23,334.17 and 9,356.10

Step by Step Solution

1. Step 1: Write the proportion equation
   16,909.89 : 23,334.17 = 9,356.10 : x
2. Step 2: Convert to fraction form
   16,909.89/23,334.17 = 9,356.10/x
3. Step 3: Cross multiply
   16,909.89x = 23,334.17 × 9,356.10
4. Step 4: Simplify right side
   16,909.89x = 218,316,827.94
5. Step 5: Solve for x
   x = 218,316,827.94/16,909.89
6. Step 6: Final answer
   x = 12,910.60