Finding the Fourth Proportional to 7,947.45, 10,961.22 and 5,556.63

Step by Step Solution

1. Step 1: Write the proportion equation
   7,947.45 : 10,961.22 = 5,556.63 : x
2. Step 2: Convert to fraction form
   7,947.45/10,961.22 = 5,556.63/x
3. Step 3: Cross multiply
   7,947.45x = 10,961.22 × 5,556.63
4. Step 4: Simplify right side
   7,947.45x = 60,907,443.89
5. Step 5: Solve for x
   x = 60,907,443.89/7,947.45
6. Step 6: Final answer
   x = 7,663.77