Finding the Fourth Proportional to 9,384.48, 12,952.56 and 7,811.04

Step by Step Solution

1. Step 1: Write the proportion equation
   9,384.48 : 12,952.56 = 7,811.04 : x
2. Step 2: Convert to fraction form
   9,384.48/12,952.56 = 7,811.04/x
3. Step 3: Cross multiply
   9,384.48x = 12,952.56 × 7,811.04
4. Step 4: Simplify right side
   9,384.48x = 101,172,964.26
5. Step 5: Solve for x
   x = 101,172,964.26/9,384.48
6. Step 6: Final answer
   x = 10,780.88