Finding the Fourth Proportional to 7,031.28, 10,536.51 and 3,078.89

Step by Step Solution

1. Step 1: Write the proportion equation
   7,031.28 : 10,536.51 = 3,078.89 : x
2. Step 2: Convert to fraction form
   7,031.28/10,536.51 = 3,078.89/x
3. Step 3: Cross multiply
   7,031.28x = 10,536.51 × 3,078.89
4. Step 4: Simplify right side
   7,031.28x = 32,440,702.59
5. Step 5: Solve for x
   x = 32,440,702.59/7,031.28
6. Step 6: Final answer
   x = 4,613.77