Finding the Fourth Proportional to 9,058.21, 12,489.46 and 5,870.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,058.21 : 12,489.46 = 5,870.34 : x
2. Step 2: Convert to fraction form
   9,058.21/12,489.46 = 5,870.34/x
3. Step 3: Cross multiply
   9,058.21x = 12,489.46 × 5,870.34
4. Step 4: Simplify right side
   9,058.21x = 73,317,361.94
5. Step 5: Solve for x
   x = 73,317,361.94/9,058.21
6. Step 6: Final answer
   x = 8,094.03