Finding the Fourth Proportional to 7,018.68, 9,685.98 and 3,875.10

Step by Step Solution

1. Step 1: Write the proportion equation
   7,018.68 : 9,685.98 = 3,875.10 : x
2. Step 2: Convert to fraction form
   7,018.68/9,685.98 = 3,875.10/x
3. Step 3: Cross multiply
   7,018.68x = 9,685.98 × 3,875.10
4. Step 4: Simplify right side
   7,018.68x = 37,534,141.10
5. Step 5: Solve for x
   x = 37,534,141.10/7,018.68
6. Step 6: Final answer
   x = 5,347.75