Finding the Fourth Proportional to 10,618.62, 14,636.88 and 9,761.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,618.62 : 14,636.88 = 9,761.10 : x
2. Step 2: Convert to fraction form
   10,618.62/14,636.88 = 9,761.10/x
3. Step 3: Cross multiply
   10,618.62x = 14,636.88 × 9,761.10
4. Step 4: Simplify right side
   10,618.62x = 142,872,049.37
5. Step 5: Solve for x
   x = 142,872,049.37/10,618.62
6. Step 6: Final answer
   x = 13,454.86