Finding the Fourth Proportional to 5,605.89, 7,680.10 and 5,395.69

Step by Step Solution

1. Step 1: Write the proportion equation
   5,605.89 : 7,680.10 = 5,395.69 : x
2. Step 2: Convert to fraction form
   5,605.89/7,680.10 = 5,395.69/x
3. Step 3: Cross multiply
   5,605.89x = 7,680.10 × 5,395.69
4. Step 4: Simplify right side
   5,605.89x = 41,439,438.77
5. Step 5: Solve for x
   x = 41,439,438.77/5,605.89
6. Step 6: Final answer
   x = 7,392.13