Finding the Fourth Proportional to 40,406.50, 60,612.18 and 12,704.50

Step by Step Solution

1. Step 1: Write the proportion equation
   40,406.50 : 60,612.18 = 12,704.50 : x
2. Step 2: Convert to fraction form
   40,406.50/60,612.18 = 12,704.50/x
3. Step 3: Cross multiply
   40,406.50x = 60,612.18 × 12,704.50
4. Step 4: Simplify right side
   40,406.50x = 770,047,440.81
5. Step 5: Solve for x
   x = 770,047,440.81/40,406.50
6. Step 6: Final answer
   x = 19,057.51