Finding the Fourth Proportional to 12,719.91, 19,081.86 and 3,952.74

Step by Step Solution

1. Step 1: Write the proportion equation
   12,719.91 : 19,081.86 = 3,952.74 : x
2. Step 2: Convert to fraction form
   12,719.91/19,081.86 = 3,952.74/x
3. Step 3: Cross multiply
   12,719.91x = 19,081.86 × 3,952.74
4. Step 4: Simplify right side
   12,719.91x = 75,425,631.30
5. Step 5: Solve for x
   x = 75,425,631.30/12,719.91
6. Step 6: Final answer
   x = 5,929.73