Finding the Fourth Proportional to 10,621.58, 14,661.75 and 7,976.63

Step by Step Solution

1. Step 1: Write the proportion equation
   10,621.58 : 14,661.75 = 7,976.63 : x
2. Step 2: Convert to fraction form
   10,621.58/14,661.75 = 7,976.63/x
3. Step 3: Cross multiply
   10,621.58x = 14,661.75 × 7,976.63
4. Step 4: Simplify right side
   10,621.58x = 116,951,281.59
5. Step 5: Solve for x
   x = 116,951,281.59/10,621.58
6. Step 6: Final answer
   x = 11,010.73