Finding the Fourth Proportional to 10,621.24, 14,618.82 and 9,761.02

Step by Step Solution

1. Step 1: Write the proportion equation
   10,621.24 : 14,618.82 = 9,761.02 : x
2. Step 2: Convert to fraction form
   10,621.24/14,618.82 = 9,761.02/x
3. Step 3: Cross multiply
   10,621.24x = 14,618.82 × 9,761.02
4. Step 4: Simplify right side
   10,621.24x = 142,694,594.40
5. Step 5: Solve for x
   x = 142,694,594.40/10,621.24
6. Step 6: Final answer
   x = 13,434.83