Finding the Fourth Proportional to 7,931.34, 10,945.40 and 4,789.35

Step by Step Solution

1. Step 1: Write the proportion equation
   7,931.34 : 10,945.40 = 4,789.35 : x
2. Step 2: Convert to fraction form
   7,931.34/10,945.40 = 4,789.35/x
3. Step 3: Cross multiply
   7,931.34x = 10,945.40 × 4,789.35
4. Step 4: Simplify right side
   7,931.34x = 52,421,327.54
5. Step 5: Solve for x
   x = 52,421,327.54/7,931.34
6. Step 6: Final answer
   x = 6,609.39