Finding the Fourth Proportional to 7,931.69, 10,940.78 and 5,102.75

Step by Step Solution

1. Step 1: Write the proportion equation
   7,931.69 : 10,940.78 = 5,102.75 : x
2. Step 2: Convert to fraction form
   7,931.69/10,940.78 = 5,102.75/x
3. Step 3: Cross multiply
   7,931.69x = 10,940.78 × 5,102.75
4. Step 4: Simplify right side
   7,931.69x = 55,828,076.55
5. Step 5: Solve for x
   x = 55,828,076.55/7,931.69
6. Step 6: Final answer
   x = 7,038.61