Finding the Fourth Proportional to 17,855,522.55, 24,617,150.24 and 12,889,778.67

Step by Step Solution

1. Step 1: Write the proportion equation
   17,855,522.55 : 24,617,150.24 = 12,889,778.67 : x
2. Step 2: Convert to fraction form
   17,855,522.55/24,617,150.24 = 12,889,778.67/x
3. Step 3: Cross multiply
   17,855,522.55x = 24,617,150.24 × 12,889,778.67
4. Step 4: Simplify right side
   17,855,522.55x = 317,309,618,015,288.50
5. Step 5: Solve for x
   x = 317,309,618,015,288.50/17,855,522.55
6. Step 6: Final answer
   x = 17,770,951.10