Finding the Fourth Proportional to 5,426.68, 8,144.62 and 3,870.48

Step by Step Solution

1. Step 1: Write the proportion equation
   5,426.68 : 8,144.62 = 3,870.48 : x
2. Step 2: Convert to fraction form
   5,426.68/8,144.62 = 3,870.48/x
3. Step 3: Cross multiply
   5,426.68x = 8,144.62 × 3,870.48
4. Step 4: Simplify right side
   5,426.68x = 31,523,588.82
5. Step 5: Solve for x
   x = 31,523,588.82/5,426.68
6. Step 6: Final answer
   x = 5,809.00