Finding the Fourth Proportional to 5,666.18, 8,490.60 and 3,810.42

Step by Step Solution

1. Step 1: Write the proportion equation
   5,666.18 : 8,490.60 = 3,810.42 : x
2. Step 2: Convert to fraction form
   5,666.18/8,490.60 = 3,810.42/x
3. Step 3: Cross multiply
   5,666.18x = 8,490.60 × 3,810.42
4. Step 4: Simplify right side
   5,666.18x = 32,352,752.05
5. Step 5: Solve for x
   x = 32,352,752.05/5,666.18
6. Step 6: Final answer
   x = 5,709.80