Finding the Fourth Proportional to 5,931.82, 8,160.30 and 5,129.16

Step by Step Solution

1. Step 1: Write the proportion equation
   5,931.82 : 8,160.30 = 5,129.16 : x
2. Step 2: Convert to fraction form
   5,931.82/8,160.30 = 5,129.16/x
3. Step 3: Cross multiply
   5,931.82x = 8,160.30 × 5,129.16
4. Step 4: Simplify right side
   5,931.82x = 41,855,443.55
5. Step 5: Solve for x
   x = 41,855,443.55/5,931.82
6. Step 6: Final answer
   x = 7,056.09