Finding the Fourth Proportional to 7,061.77, 9,745.42 and 3,875.20

Step by Step Solution

1. Step 1: Write the proportion equation
   7,061.77 : 9,745.42 = 3,875.20 : x
2. Step 2: Convert to fraction form
   7,061.77/9,745.42 = 3,875.20/x
3. Step 3: Cross multiply
   7,061.77x = 9,745.42 × 3,875.20
4. Step 4: Simplify right side
   7,061.77x = 37,765,468.61
5. Step 5: Solve for x
   x = 37,765,468.61/7,061.77
6. Step 6: Final answer
   x = 5,347.88