Finding the Fourth Proportional to 8,091.64, 12,127.52 and 3,870.06

Step by Step Solution

1. Step 1: Write the proportion equation
   8,091.64 : 12,127.52 = 3,870.06 : x
2. Step 2: Convert to fraction form
   8,091.64/12,127.52 = 3,870.06/x
3. Step 3: Cross multiply
   8,091.64x = 12,127.52 × 3,870.06
4. Step 4: Simplify right side
   8,091.64x = 46,934,230.05
5. Step 5: Solve for x
   x = 46,934,230.05/8,091.64
6. Step 6: Final answer
   x = 5,800.34