Finding the Fourth Proportional to 7,141.36, 9,860.55 and 5,566.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,141.36 : 9,860.55 = 5,566.72 : x
2. Step 2: Convert to fraction form
   7,141.36/9,860.55 = 5,566.72/x
3. Step 3: Cross multiply
   7,141.36x = 9,860.55 × 5,566.72
4. Step 4: Simplify right side
   7,141.36x = 54,890,920.90
5. Step 5: Solve for x
   x = 54,890,920.90/7,141.36
6. Step 6: Final answer
   x = 7,686.34