Finding the Fourth Proportional to 19,025.96, 26,258.46 and 10,643

Step by Step Solution

1. Step 1: Write the proportion equation
   19,025.96 : 26,258.46 = 10,643 : x
2. Step 2: Convert to fraction form
   19,025.96/26,258.46 = 10,643/x
3. Step 3: Cross multiply
   19,025.96x = 26,258.46 × 10,643
4. Step 4: Simplify right side
   19,025.96x = 279,468,789.78
5. Step 5: Solve for x
   x = 279,468,789.78/19,025.96
6. Step 6: Final answer
   x = 14,688.81