Finding the Fourth Proportional to 8,477.76, 12,707.42 and 7,241.43

Step by Step Solution

1. Step 1: Write the proportion equation
   8,477.76 : 12,707.42 = 7,241.43 : x
2. Step 2: Convert to fraction form
   8,477.76/12,707.42 = 7,241.43/x
3. Step 3: Cross multiply
   8,477.76x = 12,707.42 × 7,241.43
4. Step 4: Simplify right side
   8,477.76x = 92,019,903.86
5. Step 5: Solve for x
   x = 92,019,903.86/8,477.76
6. Step 6: Final answer
   x = 10,854.27