Finding the Fourth Proportional to 6,112.71, 8,434.32 and 3,721.08

Step by Step Solution

1. Step 1: Write the proportion equation
   6,112.71 : 8,434.32 = 3,721.08 : x
2. Step 2: Convert to fraction form
   6,112.71/8,434.32 = 3,721.08/x
3. Step 3: Cross multiply
   6,112.71x = 8,434.32 × 3,721.08
4. Step 4: Simplify right side
   6,112.71x = 31,384,733.88
5. Step 5: Solve for x
   x = 31,384,733.88/6,112.71
6. Step 6: Final answer
   x = 5,134.34