Finding the Fourth Proportional to 7,938.48, 10,956.78 and 5,066.64

Step by Step Solution

1. Step 1: Write the proportion equation
   7,938.48 : 10,956.78 = 5,066.64 : x
2. Step 2: Convert to fraction form
   7,938.48/10,956.78 = 5,066.64/x
3. Step 3: Cross multiply
   7,938.48x = 10,956.78 × 5,066.64
4. Step 4: Simplify right side
   7,938.48x = 55,514,059.82
5. Step 5: Solve for x
   x = 55,514,059.82/7,938.48
6. Step 6: Final answer
   x = 6,993.03