Finding the Fourth Proportional to 7,018.98, 9,686.34 and 3,875.16

Step by Step Solution

1. Step 1: Write the proportion equation
   7,018.98 : 9,686.34 = 3,875.16 : x
2. Step 2: Convert to fraction form
   7,018.98/9,686.34 = 3,875.16/x
3. Step 3: Cross multiply
   7,018.98x = 9,686.34 × 3,875.16
4. Step 4: Simplify right side
   7,018.98x = 37,536,117.31
5. Step 5: Solve for x
   x = 37,536,117.31/7,018.98
6. Step 6: Final answer
   x = 5,347.80