Finding the Fourth Proportional to 12,819.79, 19,238.27 and 4,499.85

Step by Step Solution

1. Step 1: Write the proportion equation
   12,819.79 : 19,238.27 = 4,499.85 : x
2. Step 2: Convert to fraction form
   12,819.79/19,238.27 = 4,499.85/x
3. Step 3: Cross multiply
   12,819.79x = 19,238.27 × 4,499.85
4. Step 4: Simplify right side
   12,819.79x = 86,569,210.57
5. Step 5: Solve for x
   x = 86,569,210.57/12,819.79
6. Step 6: Final answer
   x = 6,752.78