Finding the Fourth Proportional to 12,958.50, 17,884.89 and 9,809.22

Step by Step Solution

1. Step 1: Write the proportion equation
   12,958.50 : 17,884.89 = 9,809.22 : x
2. Step 2: Convert to fraction form
   12,958.50/17,884.89 = 9,809.22/x
3. Step 3: Cross multiply
   12,958.50x = 17,884.89 × 9,809.22
4. Step 4: Simplify right side
   12,958.50x = 175,436,820.69
5. Step 5: Solve for x
   x = 175,436,820.69/12,958.50
6. Step 6: Final answer
   x = 13,538.36