Finding the Fourth Proportional to 16,869.82, 23,280.72 and 9,316.12

Step by Step Solution

1. Step 1: Write the proportion equation
   16,869.82 : 23,280.72 = 9,316.12 : x
2. Step 2: Convert to fraction form
   16,869.82/23,280.72 = 9,316.12/x
3. Step 3: Cross multiply
   16,869.82x = 23,280.72 × 9,316.12
4. Step 4: Simplify right side
   16,869.82x = 216,885,981.21
5. Step 5: Solve for x
   x = 216,885,981.21/16,869.82
6. Step 6: Final answer
   x = 12,856.45