Finding the Fourth Proportional to 8,384.96, 12,577.56 and 3,191.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,384.96 : 12,577.56 = 3,191.12 : x
2. Step 2: Convert to fraction form
   8,384.96/12,577.56 = 3,191.12/x
3. Step 3: Cross multiply
   8,384.96x = 12,577.56 × 3,191.12
4. Step 4: Simplify right side
   8,384.96x = 40,136,503.27
5. Step 5: Solve for x
   x = 40,136,503.27/8,384.96
6. Step 6: Final answer
   x = 4,786.73