Finding the Fourth Proportional to 5,881.08, 8,111.16 and 5,171.40

Step by Step Solution

1. Step 1: Write the proportion equation
   5,881.08 : 8,111.16 = 5,171.40 : x
2. Step 2: Convert to fraction form
   5,881.08/8,111.16 = 5,171.40/x
3. Step 3: Cross multiply
   5,881.08x = 8,111.16 × 5,171.40
4. Step 4: Simplify right side
   5,881.08x = 41,946,052.82
5. Step 5: Solve for x
   x = 41,946,052.82/5,881.08
6. Step 6: Final answer
   x = 7,132.37