Finding the Fourth Proportional to 10,894.59, 16,343.71 and 8,554.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,894.59 : 16,343.71 = 8,554.50 : x
2. Step 2: Convert to fraction form
   10,894.59/16,343.71 = 8,554.50/x
3. Step 3: Cross multiply
   10,894.59x = 16,343.71 × 8,554.50
4. Step 4: Simplify right side
   10,894.59x = 139,812,245.81
5. Step 5: Solve for x
   x = 139,812,245.81/10,894.59
6. Step 6: Final answer
   x = 12,833.18