Finding the Fourth Proportional to 10,615.05, 14,654.52 and 9,771.84

Step by Step Solution

1. Step 1: Write the proportion equation
   10,615.05 : 14,654.52 = 9,771.84 : x
2. Step 2: Convert to fraction form
   10,615.05/14,654.52 = 9,771.84/x
3. Step 3: Cross multiply
   10,615.05x = 14,654.52 × 9,771.84
4. Step 4: Simplify right side
   10,615.05x = 143,201,624.72
5. Step 5: Solve for x
   x = 143,201,624.72/10,615.05
6. Step 6: Final answer
   x = 13,490.43