Finding the Fourth Proportional to 9,386.82, 12,952.44 and 7,892.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,386.82 : 12,952.44 = 7,892.10 : x
2. Step 2: Convert to fraction form
   9,386.82/12,952.44 = 7,892.10/x
3. Step 3: Cross multiply
   9,386.82x = 12,952.44 × 7,892.10
4. Step 4: Simplify right side
   9,386.82x = 102,221,951.72
5. Step 5: Solve for x
   x = 102,221,951.72/9,386.82
6. Step 6: Final answer
   x = 10,889.94