Finding the Fourth Proportional to 9,958.16, 14,964.59 and 9,308

Step by Step Solution

1. Step 1: Write the proportion equation
   9,958.16 : 14,964.59 = 9,308 : x
2. Step 2: Convert to fraction form
   9,958.16/14,964.59 = 9,308/x
3. Step 3: Cross multiply
   9,958.16x = 14,964.59 × 9,308
4. Step 4: Simplify right side
   9,958.16x = 139,290,403.72
5. Step 5: Solve for x
   x = 139,290,403.72/9,958.16
6. Step 6: Final answer
   x = 13,987.56