Finding the Fourth Proportional to 12,762.42, 19,142.60 and 8,068.74

Step by Step Solution

1. Step 1: Write the proportion equation
   12,762.42 : 19,142.60 = 8,068.74 : x
2. Step 2: Convert to fraction form
   12,762.42/19,142.60 = 8,068.74/x
3. Step 3: Cross multiply
   12,762.42x = 19,142.60 × 8,068.74
4. Step 4: Simplify right side
   12,762.42x = 154,456,621.98
5. Step 5: Solve for x
   x = 154,456,621.98/12,762.42
6. Step 6: Final answer
   x = 12,102.46