Finding the Fourth Proportional to 9,887.76, 14,831.62 and 3,967.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,887.76 : 14,831.62 = 3,967.31 : x
2. Step 2: Convert to fraction form
   9,887.76/14,831.62 = 3,967.31/x
3. Step 3: Cross multiply
   9,887.76x = 14,831.62 × 3,967.31
4. Step 4: Simplify right side
   9,887.76x = 58,841,661.50
5. Step 5: Solve for x
   x = 58,841,661.50/9,887.76
6. Step 6: Final answer
   x = 5,950.96