Finding the Fourth Proportional to 12,171.47, 18,259.94 and 3,851.98

Step by Step Solution

1. Step 1: Write the proportion equation
   12,171.47 : 18,259.94 = 3,851.98 : x
2. Step 2: Convert to fraction form
   12,171.47/18,259.94 = 3,851.98/x
3. Step 3: Cross multiply
   12,171.47x = 18,259.94 × 3,851.98
4. Step 4: Simplify right side
   12,171.47x = 70,336,887.66
5. Step 5: Solve for x
   x = 70,336,887.66/12,171.47
6. Step 6: Final answer
   x = 5,778.83