Finding the Fourth Proportional to 9,343.32, 12,912.36 and 7,662.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,343.32 : 12,912.36 = 7,662.12 : x
2. Step 2: Convert to fraction form
   9,343.32/12,912.36 = 7,662.12/x
3. Step 3: Cross multiply
   9,343.32x = 12,912.36 × 7,662.12
4. Step 4: Simplify right side
   9,343.32x = 98,936,051.80
5. Step 5: Solve for x
   x = 98,936,051.80/9,343.32
6. Step 6: Final answer
   x = 10,588.96