Finding the Fourth Proportional to 12,861,205.10, 17,723,997.36 and 12,624,847.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,861,205.10 : 17,723,997.36 = 12,624,847.50 : x
2. Step 2: Convert to fraction form
   12,861,205.10/17,723,997.36 = 12,624,847.50/x
3. Step 3: Cross multiply
   12,861,205.10x = 17,723,997.36 × 12,624,847.50
4. Step 4: Simplify right side
   12,861,205.10x = 223,762,763,760,402.59
5. Step 5: Solve for x
   x = 223,762,763,760,402.59/12,861,205.10
6. Step 6: Final answer
   x = 17,398,273.49