Finding the Fourth Proportional to 12,743.02, 19,111.18 and 5,719.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,743.02 : 19,111.18 = 5,719.10 : x
2. Step 2: Convert to fraction form
   12,743.02/19,111.18 = 5,719.10/x
3. Step 3: Cross multiply
   12,743.02x = 19,111.18 × 5,719.10
4. Step 4: Simplify right side
   12,743.02x = 109,298,749.54
5. Step 5: Solve for x
   x = 109,298,749.54/12,743.02
6. Step 6: Final answer
   x = 8,577.15