Finding the Fourth Proportional to 5,870.98, 8,798.25 and 4,219.78

Step by Step Solution

1. Step 1: Write the proportion equation
   5,870.98 : 8,798.25 = 4,219.78 : x
2. Step 2: Convert to fraction form
   5,870.98/8,798.25 = 4,219.78/x
3. Step 3: Cross multiply
   5,870.98x = 8,798.25 × 4,219.78
4. Step 4: Simplify right side
   5,870.98x = 37,126,679.39
5. Step 5: Solve for x
   x = 37,126,679.39/5,870.98
6. Step 6: Final answer
   x = 6,323.76