Finding the Fourth Proportional to 5,488.30, 7,698.20 and 5,488.30

Step by Step Solution

1. Step 1: Write the proportion equation
   5,488.30 : 7,698.20 = 5,488.30 : x
2. Step 2: Convert to fraction form
   5,488.30/7,698.20 = 5,488.30/x
3. Step 3: Cross multiply
   5,488.30x = 7,698.20 × 5,488.30
4. Step 4: Simplify right side
   5,488.30x = 42,250,031.06
5. Step 5: Solve for x
   x = 42,250,031.06/5,488.30
6. Step 6: Final answer
   x = 7,698.20