Finding the Fourth Proportional to 5,972.56, 8,233.28 and 5,129.20

Step by Step Solution

1. Step 1: Write the proportion equation
   5,972.56 : 8,233.28 = 5,129.20 : x
2. Step 2: Convert to fraction form
   5,972.56/8,233.28 = 5,129.20/x
3. Step 3: Cross multiply
   5,972.56x = 8,233.28 × 5,129.20
4. Step 4: Simplify right side
   5,972.56x = 42,230,139.78
5. Step 5: Solve for x
   x = 42,230,139.78/5,972.56
6. Step 6: Final answer
   x = 7,070.69