Finding the Fourth Proportional to 8,300.08, 12,442.12 and 5,330.15

Step by Step Solution

1. Step 1: Write the proportion equation
   8,300.08 : 12,442.12 = 5,330.15 : x
2. Step 2: Convert to fraction form
   8,300.08/12,442.12 = 5,330.15/x
3. Step 3: Cross multiply
   8,300.08x = 12,442.12 × 5,330.15
4. Step 4: Simplify right side
   8,300.08x = 66,318,290.38
5. Step 5: Solve for x
   x = 66,318,290.38/8,300.08
6. Step 6: Final answer
   x = 7,990.08