Finding the Fourth Proportional to 9,478.83, 13,086.86 and 8,482.38

Step by Step Solution

1. Step 1: Write the proportion equation
   9,478.83 : 13,086.86 = 8,482.38 : x
2. Step 2: Convert to fraction form
   9,478.83/13,086.86 = 8,482.38/x
3. Step 3: Cross multiply
   9,478.83x = 13,086.86 × 8,482.38
4. Step 4: Simplify right side
   9,478.83x = 111,007,719.53
5. Step 5: Solve for x
   x = 111,007,719.53/9,478.83
6. Step 6: Final answer
   x = 11,711.12