Finding the Fourth Proportional to 6,128.61, 8,450.01 and 5,182.71

Step by Step Solution

1. Step 1: Write the proportion equation
   6,128.61 : 8,450.01 = 5,182.71 : x
2. Step 2: Convert to fraction form
   6,128.61/8,450.01 = 5,182.71/x
3. Step 3: Cross multiply
   6,128.61x = 8,450.01 × 5,182.71
4. Step 4: Simplify right side
   6,128.61x = 43,793,951.33
5. Step 5: Solve for x
   x = 43,793,951.33/6,128.61
6. Step 6: Final answer
   x = 7,145.82