Finding the Fourth Proportional to 7,031.80, 10,548.69 and 2,100.79

Step by Step Solution

1. Step 1: Write the proportion equation
   7,031.80 : 10,548.69 = 2,100.79 : x
2. Step 2: Convert to fraction form
   7,031.80/10,548.69 = 2,100.79/x
3. Step 3: Cross multiply
   7,031.80x = 10,548.69 × 2,100.79
4. Step 4: Simplify right side
   7,031.80x = 22,160,582.47
5. Step 5: Solve for x
   x = 22,160,582.47/7,031.80
6. Step 6: Final answer
   x = 3,151.48