Finding the Fourth Proportional to 12,760.23, 19,142.33 and 3,994.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,760.23 : 19,142.33 = 3,994.31 : x
2. Step 2: Convert to fraction form
   12,760.23/19,142.33 = 3,994.31/x
3. Step 3: Cross multiply
   12,760.23x = 19,142.33 × 3,994.31
4. Step 4: Simplify right side
   12,760.23x = 76,460,428.03
5. Step 5: Solve for x
   x = 76,460,428.03/12,760.23
6. Step 6: Final answer
   x = 5,992.09