Finding the Fourth Proportional to 7,018.92, 9,686.52 and 3,875.40

Step by Step Solution

1. Step 1: Write the proportion equation
   7,018.92 : 9,686.52 = 3,875.40 : x
2. Step 2: Convert to fraction form
   7,018.92/9,686.52 = 3,875.40/x
3. Step 3: Cross multiply
   7,018.92x = 9,686.52 × 3,875.40
4. Step 4: Simplify right side
   7,018.92x = 37,539,139.61
5. Step 5: Solve for x
   x = 37,539,139.61/7,018.92
6. Step 6: Final answer
   x = 5,348.28