Finding the Fourth Proportional to 5,171.12, 7,089.62 and 5,077.52

Step by Step Solution

1. Step 1: Write the proportion equation
   5,171.12 : 7,089.62 = 5,077.52 : x
2. Step 2: Convert to fraction form
   5,171.12/7,089.62 = 5,077.52/x
3. Step 3: Cross multiply
   5,171.12x = 7,089.62 × 5,077.52
4. Step 4: Simplify right side
   5,171.12x = 35,997,687.34
5. Step 5: Solve for x
   x = 35,997,687.34/5,171.12
6. Step 6: Final answer
   x = 6,961.29