Finding the Fourth Proportional to 6,761.22, 10,128.06 and 5,516.25

Step by Step Solution

1. Step 1: Write the proportion equation
   6,761.22 : 10,128.06 = 5,516.25 : x
2. Step 2: Convert to fraction form
   6,761.22/10,128.06 = 5,516.25/x
3. Step 3: Cross multiply
   6,761.22x = 10,128.06 × 5,516.25
4. Step 4: Simplify right side
   6,761.22x = 55,868,910.98
5. Step 5: Solve for x
   x = 55,868,910.98/6,761.22
6. Step 6: Final answer
   x = 8,263.14