Finding the Fourth Proportional to 5,420.38, 8,094.38 and 5,143.61

Step by Step Solution

1. Step 1: Write the proportion equation
   5,420.38 : 8,094.38 = 5,143.61 : x
2. Step 2: Convert to fraction form
   5,420.38/8,094.38 = 5,143.61/x
3. Step 3: Cross multiply
   5,420.38x = 8,094.38 × 5,143.61
4. Step 4: Simplify right side
   5,420.38x = 41,634,333.91
5. Step 5: Solve for x
   x = 41,634,333.91/5,420.38
6. Step 6: Final answer
   x = 7,681.07