Finding the Fourth Proportional to 10,259.72, 14,155.89 and 5,783.48

Step by Step Solution

1. Step 1: Write the proportion equation
   10,259.72 : 14,155.89 = 5,783.48 : x
2. Step 2: Convert to fraction form
   10,259.72/14,155.89 = 5,783.48/x
3. Step 3: Cross multiply
   10,259.72x = 14,155.89 × 5,783.48
4. Step 4: Simplify right side
   10,259.72x = 81,870,306.70
5. Step 5: Solve for x
   x = 81,870,306.70/10,259.72
6. Step 6: Final answer
   x = 7,979.78