Finding the Fourth Proportional to 30,662.50, 45,992.83 and 8,477.21

Step by Step Solution

1. Step 1: Write the proportion equation
   30,662.50 : 45,992.83 = 8,477.21 : x
2. Step 2: Convert to fraction form
   30,662.50/45,992.83 = 8,477.21/x
3. Step 3: Cross multiply
   30,662.50x = 45,992.83 × 8,477.21
4. Step 4: Simplify right side
   30,662.50x = 389,890,606.05
5. Step 5: Solve for x
   x = 389,890,606.05/30,662.50
6. Step 6: Final answer
   x = 12,715.55