Finding the Fourth Proportional to 5,730.89, 8,557.12 and 5,134.05

Step by Step Solution

1. Step 1: Write the proportion equation
   5,730.89 : 8,557.12 = 5,134.05 : x
2. Step 2: Convert to fraction form
   5,730.89/8,557.12 = 5,134.05/x
3. Step 3: Cross multiply
   5,730.89x = 8,557.12 × 5,134.05
4. Step 4: Simplify right side
   5,730.89x = 43,932,669.10
5. Step 5: Solve for x
   x = 43,932,669.10/5,730.89
6. Step 6: Final answer
   x = 7,665.95