Finding the Fourth Proportional to 9,386.42, 12,932.02 and 7,705.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,386.42 : 12,932.02 = 7,705.16 : x
2. Step 2: Convert to fraction form
   9,386.42/12,932.02 = 7,705.16/x
3. Step 3: Cross multiply
   9,386.42x = 12,932.02 × 7,705.16
4. Step 4: Simplify right side
   9,386.42x = 99,643,283.22
5. Step 5: Solve for x
   x = 99,643,283.22/9,386.42
6. Step 6: Final answer
   x = 10,615.69