Finding the Fourth Proportional to 12,740.59, 19,103.12 and 5,719.24

Step by Step Solution

1. Step 1: Write the proportion equation
   12,740.59 : 19,103.12 = 5,719.24 : x
2. Step 2: Convert to fraction form
   12,740.59/19,103.12 = 5,719.24/x
3. Step 3: Cross multiply
   12,740.59x = 19,103.12 × 5,719.24
4. Step 4: Simplify right side
   12,740.59x = 109,255,273.12
5. Step 5: Solve for x
   x = 109,255,273.12/12,740.59
6. Step 6: Final answer
   x = 8,575.37