Finding the Fourth Proportional to 5,790.57, 8,636.01 and 5,230.05

Step by Step Solution

1. Step 1: Write the proportion equation
   5,790.57 : 8,636.01 = 5,230.05 : x
2. Step 2: Convert to fraction form
   5,790.57/8,636.01 = 5,230.05/x
3. Step 3: Cross multiply
   5,790.57x = 8,636.01 × 5,230.05
4. Step 4: Simplify right side
   5,790.57x = 45,166,764.10
5. Step 5: Solve for x
   x = 45,166,764.10/5,790.57
6. Step 6: Final answer
   x = 7,800.05