Finding the Fourth Proportional to 5,662.23, 7,810.61 and 3,890.76

Step by Step Solution

1. Step 1: Write the proportion equation
   5,662.23 : 7,810.61 = 3,890.76 : x
2. Step 2: Convert to fraction form
   5,662.23/7,810.61 = 3,890.76/x
3. Step 3: Cross multiply
   5,662.23x = 7,810.61 × 3,890.76
4. Step 4: Simplify right side
   5,662.23x = 30,389,189.51
5. Step 5: Solve for x
   x = 30,389,189.51/5,662.23
6. Step 6: Final answer
   x = 5,367.00