Finding the Fourth Proportional to 9,906.76, 14,771.57 and 9,634.60

Step by Step Solution

1. Step 1: Write the proportion equation
   9,906.76 : 14,771.57 = 9,634.60 : x
2. Step 2: Convert to fraction form
   9,906.76/14,771.57 = 9,634.60/x
3. Step 3: Cross multiply
   9,906.76x = 14,771.57 × 9,634.60
4. Step 4: Simplify right side
   9,906.76x = 142,318,168.32
5. Step 5: Solve for x
   x = 142,318,168.32/9,906.76
6. Step 6: Final answer
   x = 14,365.76