Finding the Fourth Proportional to 7,018.52, 9,685.86 and 3,874.64

Step by Step Solution

1. Step 1: Write the proportion equation
   7,018.52 : 9,685.86 = 3,874.64 : x
2. Step 2: Convert to fraction form
   7,018.52/9,685.86 = 3,874.64/x
3. Step 3: Cross multiply
   7,018.52x = 9,685.86 × 3,874.64
4. Step 4: Simplify right side
   7,018.52x = 37,529,220.59
5. Step 5: Solve for x
   x = 37,529,220.59/7,018.52
6. Step 6: Final answer
   x = 5,347.17