Finding the Fourth Proportional to 8,103.90, 12,146.43 and 5,330.04

Step by Step Solution

1. Step 1: Write the proportion equation
   8,103.90 : 12,146.43 = 5,330.04 : x
2. Step 2: Convert to fraction form
   8,103.90/12,146.43 = 5,330.04/x
3. Step 3: Cross multiply
   8,103.90x = 12,146.43 × 5,330.04
4. Step 4: Simplify right side
   8,103.90x = 64,740,957.76
5. Step 5: Solve for x
   x = 64,740,957.76/8,103.90
6. Step 6: Final answer
   x = 7,988.86