Finding the Fourth Proportional to 10,591.54, 15,875.79 and 7,976.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,591.54 : 15,875.79 = 7,976.50 : x
2. Step 2: Convert to fraction form
   10,591.54/15,875.79 = 7,976.50/x
3. Step 3: Cross multiply
   10,591.54x = 15,875.79 × 7,976.50
4. Step 4: Simplify right side
   10,591.54x = 126,633,238.94
5. Step 5: Solve for x
   x = 126,633,238.94/10,591.54
6. Step 6: Final answer
   x = 11,956.07