Finding the Fourth Proportional to 5,580.69, 8,404.45 and 5,082.46

Step by Step Solution

1. Step 1: Write the proportion equation
   5,580.69 : 8,404.45 = 5,082.46 : x
2. Step 2: Convert to fraction form
   5,580.69/8,404.45 = 5,082.46/x
3. Step 3: Cross multiply
   5,580.69x = 8,404.45 × 5,082.46
4. Step 4: Simplify right side
   5,580.69x = 42,715,301.96
5. Step 5: Solve for x
   x = 42,715,301.96/5,580.69
6. Step 6: Final answer
   x = 7,654.13