Finding the Fourth Proportional to 8,742.38, 12,062.39 and 5,107.86

Step by Step Solution

1. Step 1: Write the proportion equation
   8,742.38 : 12,062.39 = 5,107.86 : x
2. Step 2: Convert to fraction form
   8,742.38/12,062.39 = 5,107.86/x
3. Step 3: Cross multiply
   8,742.38x = 12,062.39 × 5,107.86
4. Step 4: Simplify right side
   8,742.38x = 61,612,973.85
5. Step 5: Solve for x
   x = 61,612,973.85/8,742.38
6. Step 6: Final answer
   x = 7,047.62