Finding the Fourth Proportional to 8,309,373.50, 12,465,676.20 and 3,191,429

Step by Step Solution

1. Step 1: Write the proportion equation
   8,309,373.50 : 12,465,676.20 = 3,191,429 : x
2. Step 2: Convert to fraction form
   8,309,373.50/12,465,676.20 = 3,191,429/x
3. Step 3: Cross multiply
   8,309,373.50x = 12,465,676.20 × 3,191,429
4. Step 4: Simplify right side
   8,309,373.50x = 39,783,320,529,289.80
5. Step 5: Solve for x
   x = 39,783,320,529,289.80/8,309,373.50
6. Step 6: Final answer
   x = 4,787,764.15