Finding the Fourth Proportional to 8,741.64, 12,064.31 and 5,386.71

Step by Step Solution

1. Step 1: Write the proportion equation
   8,741.64 : 12,064.31 = 5,386.71 : x
2. Step 2: Convert to fraction form
   8,741.64/12,064.31 = 5,386.71/x
3. Step 3: Cross multiply
   8,741.64x = 12,064.31 × 5,386.71
4. Step 4: Simplify right side
   8,741.64x = 64,986,939.32
5. Step 5: Solve for x
   x = 64,986,939.32/8,741.64
6. Step 6: Final answer
   x = 7,434.18