Finding the Fourth Proportional to 8,251.74, 12,397.89 and 5,291.46

Step by Step Solution

1. Step 1: Write the proportion equation
   8,251.74 : 12,397.89 = 5,291.46 : x
2. Step 2: Convert to fraction form
   8,251.74/12,397.89 = 5,291.46/x
3. Step 3: Cross multiply
   8,251.74x = 12,397.89 × 5,291.46
4. Step 4: Simplify right side
   8,251.74x = 65,602,939.02
5. Step 5: Solve for x
   x = 65,602,939.02/8,251.74
6. Step 6: Final answer
   x = 7,950.19