Finding the Fourth Proportional to 5,870.81, 8,796.31 and 2,905.30

Step by Step Solution

1. Step 1: Write the proportion equation
   5,870.81 : 8,796.31 = 2,905.30 : x
2. Step 2: Convert to fraction form
   5,870.81/8,796.31 = 2,905.30/x
3. Step 3: Cross multiply
   5,870.81x = 8,796.31 × 2,905.30
4. Step 4: Simplify right side
   5,870.81x = 25,555,860.93
5. Step 5: Solve for x
   x = 25,555,860.93/5,870.81
6. Step 6: Final answer
   x = 4,353.04