Finding the Fourth Proportional to 5,482.68, 8,171.89 and 5,171.30

Step by Step Solution

1. Step 1: Write the proportion equation
   5,482.68 : 8,171.89 = 5,171.30 : x
2. Step 2: Convert to fraction form
   5,482.68/8,171.89 = 5,171.30/x
3. Step 3: Cross multiply
   5,482.68x = 8,171.89 × 5,171.30
4. Step 4: Simplify right side
   5,482.68x = 42,259,294.76
5. Step 5: Solve for x
   x = 42,259,294.76/5,482.68
6. Step 6: Final answer
   x = 7,707.78