Finding the Fourth Proportional to 5,196.60, 7,288.20 and 5,196.60

Step by Step Solution

1. Step 1: Write the proportion equation
   5,196.60 : 7,288.20 = 5,196.60 : x
2. Step 2: Convert to fraction form
   5,196.60/7,288.20 = 5,196.60/x
3. Step 3: Cross multiply
   5,196.60x = 7,288.20 × 5,196.60
4. Step 4: Simplify right side
   5,196.60x = 37,873,860.12
5. Step 5: Solve for x
   x = 37,873,860.12/5,196.60
6. Step 6: Final answer
   x = 7,288.20