Finding the Fourth Proportional to 5,031.60, 6,938.72 and 3,910.56

Step by Step Solution

1. Step 1: Write the proportion equation
   5,031.60 : 6,938.72 = 3,910.56 : x
2. Step 2: Convert to fraction form
   5,031.60/6,938.72 = 3,910.56/x
3. Step 3: Cross multiply
   5,031.60x = 6,938.72 × 3,910.56
4. Step 4: Simplify right side
   5,031.60x = 27,134,280.88
5. Step 5: Solve for x
   x = 27,134,280.88/5,031.60
6. Step 6: Final answer
   x = 5,392.77