Finding the Fourth Proportional to 5,346.43, 8,012.58 and 3,870.59

Step by Step Solution

1. Step 1: Write the proportion equation
   5,346.43 : 8,012.58 = 3,870.59 : x
2. Step 2: Convert to fraction form
   5,346.43/8,012.58 = 3,870.59/x
3. Step 3: Cross multiply
   5,346.43x = 8,012.58 × 3,870.59
4. Step 4: Simplify right side
   5,346.43x = 31,013,412.02
5. Step 5: Solve for x
   x = 31,013,412.02/5,346.43
6. Step 6: Final answer
   x = 5,800.77