Finding the Fourth Proportional to 14,288.76, 19,718.64 and 7,828.74

Step by Step Solution

1. Step 1: Write the proportion equation
   14,288.76 : 19,718.64 = 7,828.74 : x
2. Step 2: Convert to fraction form
   14,288.76/19,718.64 = 7,828.74/x
3. Step 3: Cross multiply
   14,288.76x = 19,718.64 × 7,828.74
4. Step 4: Simplify right side
   14,288.76x = 154,372,105.71
5. Step 5: Solve for x
   x = 154,372,105.71/14,288.76
6. Step 6: Final answer
   x = 10,803.74