Finding the Fourth Proportional to 5,166.42, 7,129.69 and 2,808.56

Step by Step Solution

1. Step 1: Write the proportion equation
   5,166.42 : 7,129.69 = 2,808.56 : x
2. Step 2: Convert to fraction form
   5,166.42/7,129.69 = 2,808.56/x
3. Step 3: Cross multiply
   5,166.42x = 7,129.69 × 2,808.56
4. Step 4: Simplify right side
   5,166.42x = 20,024,172.95
5. Step 5: Solve for x
   x = 20,024,172.95/5,166.42
6. Step 6: Final answer
   x = 3,875.83