Finding the Fourth Proportional to 8,061.35, 12,087.35 and 3,125.21

Step by Step Solution

1. Step 1: Write the proportion equation
   8,061.35 : 12,087.35 = 3,125.21 : x
2. Step 2: Convert to fraction form
   8,061.35/12,087.35 = 3,125.21/x
3. Step 3: Cross multiply
   8,061.35x = 12,087.35 × 3,125.21
4. Step 4: Simplify right side
   8,061.35x = 37,775,485.54
5. Step 5: Solve for x
   x = 37,775,485.54/8,061.35
6. Step 6: Final answer
   x = 4,686.00