Finding the Fourth Proportional to 7,018.70, 9,685.71 and 3,874.68

Step by Step Solution

1. Step 1: Write the proportion equation
   7,018.70 : 9,685.71 = 3,874.68 : x
2. Step 2: Convert to fraction form
   7,018.70/9,685.71 = 3,874.68/x
3. Step 3: Cross multiply
   7,018.70x = 9,685.71 × 3,874.68
4. Step 4: Simplify right side
   7,018.70x = 37,529,026.82
5. Step 5: Solve for x
   x = 37,529,026.82/7,018.70
6. Step 6: Final answer
   x = 5,347.01